>A-fags don't understand relativity >A-fags can't

>he had so much fun arguing about this shit that he made another thread

>>377016313
newfag

>>377016153
it's B
anyone who actually thinks it's A is baiting or mentally disabled
literally elementary physics

Is there any basis in the games for either scenarios?

>>377016802
Moving portals aren't allowed, I believe, so there is no ingame evidence.

B is correct, though.

The real answer is "Whichever the game engine was programmed to do"

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People who argue for A are literally retarded.

>>377017015
This. It's A according to the game's physics engine. Bfags confirmed for never actually playing portal.

How can this be B the piston doesn't actually exert any force on the cube.
Is it the potential energy from gravity because you are essentially taking away the ground from underneath it and it "falls" before normal gravity pulls
it down? If so then the animation is misleading because the heart does not come out upside down.

>>377016905
Portal 2 has moving portals, in a section where you're 'behind the scenes'. Only for one puzzle though.

>>377018606
The cube speed relative to the moving blue portal translates as also speed relative to the orange portal - and that's why it flies out. The portals don't know whether it's them or the cube that's moving relative to a stationary point, only that the cube and the blue portal are getting closer.

>>377018606
Inertia means that it's not possible for the cube to go from whoamgfast to a standstill without a periodeof deceleration (assuming there's nothing blocking it of course, but that's the case in the gif).

To paraphrase GLADOS: Thing goes in speedily, thing goes out speedily.

>>377016153
I don't know what's this about, post scenario B.

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>>377018606
It can't be B but retards will argue anyway

>>377018789
>>377019003
Ok I get it now I was just thinking of portals as a strange hole but I guess they are more nuanced than that.
Never played portal btw.

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>>377016153
Listening to Phil Colins in the background.

>>377019259
>Never played portal
What the fuck are you doing with your life?

>>377017390
People who still post dead memes are literally retarded.

>>377019353
Portal is Okay, settle down

>be physicist major
>been doing it for 4 years now
>been seeing these fucking threads for almost 10 years now
I'm not even sure if it's shitposting, or people are retarded enough to think it's actually B.

We're reaching shitposting levels that shouldn't be possible.

>>377018789
But the piston/portal never actually touch the cube, so the momentum is never transmitted to it. Whether i moves at 1 km/s or speed light, if they don't make contact, they remain in different inertial frames.

You guys keep using relative speed as if this where a kinetics problem, but is a dynamics problem.

>>377019554
>claim to be physics major
>thinks an object can exhibit a notable amount of speed
>then come to a complete stop
Shitposting levels are indeed quite high, my fellow "physics" major.

>>377020705
>Doesn't know what inertial frames are.
Yup, real high shitposting levels.

B-fags are simply highschool dropouts that heard about relativity one day and think that they know shit about shit.

speedy thing goes in
speedy thing goes out

>>377020705
>thinks a stationary cube is exhibiting "notable amount of speed"

Is 0 mph notable?

>>377016905
Why do people always say this you literally have to put it on a moving surface to cut the neurotoxin, plus the moon moves too.
People always bring this up as an argument, I can't understand why.

>>377016153
>>377016686
>>377016905
>>377017390
>>377020969
wrong

>>377021047
the portal is not considered a thing
the thing is the cube
you DENSE FUCK

>>377020604
>the portal never touch the cube
The portal wouldn't touch the cube even if somebody tossed the cube into it. Touching is irrelevant.

ITS A FUCKING HOLE, THE CUBE DOESN'T GET PROPELLED BY ANYTHING AND JUST SLIDES THROUGH THE HOLE, B FAGS FUCK OFF

>>377020995
The cube is moving as it emerges through the orange portal. The only way that it wouldn't would be if you believe that as soon as any part of the cube touches the blue portal the entirety of the cube is instantaneously transported. But given that you can stand in between the portals with part of your body on either side that is untrue.

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>>377019448
>hateing onapu apustaja
ur're ashi t

>>377021120
wrong

>>377021270
This.

>>377021270
yeah okay
at what speed does the cube emerge from the orange portal?

>>377016686
I don't believe portals are elementary physics.

Consider the energy of the block itself. No kinetic energy, and still none after going through the portal, so it shouldn't fly out, just fall due to it's potential energy down the incline plane.

Now, consider the surface the block begins on. The the blue portal is lowered completely, the surface simply moves up to the portal, so in the orange portal it approaches and becomes flush. The block never has any velocity relative to that surface, so why should it gain one after going through the portal?

>>377021270
But as it emerges from the orange portal the cube is moving, and therefore has momentum. What happens to that momentum?

>>377021270
It's a hole that has different forces acting on either side of the plane of opening.

>>377020969
So you're saying A is correct? Because the box isn't speedy, it's stationary.

>>377021270
Untrue.

>>377021120
You just proved that A is right though.

As the portal is not a thing, and the fact that you can pass through it without any resistance, or get sucked/pushed by any kind of force exercised by it, it's safe to assume that it has no mass, and thus it has no means to transmit its momentum to the cube, and as per newtons law, if the cube is not moving, and the portal doesn't touch it, they remain in different inertial frames and the speed of the portal won't be transmitted to the cube, resulting in A.

>>377021170
>Touching is irrelevant.
So when a car passes in front of you at 50 km/h you get launched at 50 km/h too? you said touching is irrelevant to transmit momentum, so even if the car doesn't touch you, you still receive its momentum right?

>>377016153

Where is the momentum propelling the cube forward coming from in Scenario B?

>>377020705
>>377019554

I'm also a physicist, and I've since realized it's moot point to bring real world physics into these sorts of threads because portals inherently violate basic physics. I mean, they violate conservation of energy, which is a big no-no.

Your education is as useless here as it is in real life I make more money as a financial analyst than I did ever doing research

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>>377016153
These are my favorite.

Afags are literally disabled.

Bfags have proved time and time again that the momentum is relative, that the cube must emerge through the orange portal equal to the acceleration of the blue portal, and so on but Afags just keep going "muh hula hoops and window frames"

>>377021609
yes

>>377021509
>>377021715
I change my mind, this guy's right. There's no answer so I'm leaving

>>377021609
>stationary
Not according to the blue portal.

>>377021678
Bad example. A car crash and portals don't work the same way.

>>377021715
Are you telling me I can't apply my "physics" major to a game where you can generate infinite energy by
placing a ceiling portal directly above a floor portal?

Nah, you're just a shitposter.

>>377021910
>speedy thing goes in, speedy thing goes out
>dirt simple
>hurr durr but the portal is moving

Bfags, ladies and gentlemen

So how exactly does the portal cause any transference of inertia? Portals just transfer an object to another location like a door where one side is connected to a different place. If a door comes at you at 100km/h while you're standing still you won't suddenly fly out the other end at 100km/h

Did nobody here play the fucking games? You can easily stage this scenario in the game and the result will be A, except you won't slide because you need to cross the portal completely for gravity plane to shift.

Okay, imagine this scenario, B-fags. The blue portal goes down over the cube, but instead of going all the way down, it stops when the cube is halfway through it. The deceleration is instantaneous. What happens? Does the cube just jump through it? If not, why not?

>>377021910
>A car crash and portals don't work the same way.
But physic laws do, and as I said, no matter how fast the blue portal is, it has no means to transmit that momentum to the cube because it has no mass, thus remaining in different inertial frames that don't have any interaction with each other.

>>377022025
As it emerges from the orange portal the cube is moving relative to the orange portal and is a "speedy thing" relative to the orange portal and the room containing the orange portal. Why would it enter the environment as a "speedy thing" and then suddenly stop being one?

>>377022076
Depends on the speed of the portal and weight of the cube, but yes it does.

>>377016153

You know there are tons of spots where you can run this test in either game. You put one portal on an upwards angled surface and then toss a portal directly under the cube. Cube just flops out.

Before you go "But there's no giant piston pushing down on it" it doesn't fucking matter. The cube never touches the actual piston just passes through the portal.

>>377022227
Because the portal isn't a physical object it's like an open window that connects to another area it doesn't matter how fast the surface of the portal is moving because there's no interaction between the portal and object it just moves through it like it's a hole

>>377022072
>door analogies

In your scenario both the doorway's entrance and exit are moving around you, in the case of the portals only the entrance is moving, the exit is stationary. So let's say that only the front of the doorway moves around you, but the back of the doorway stays where it is. How could you possibly move through the exit without moving?

>>377022076

Cube flies through at half speed, the momentum is cut in half. Well, I suppose it depends if that momentum can overcome gravity acting on the lower half.

>>377022423
But it has speed as it enters the room. What happens to that speed?

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>>377022072
Underrated answer.
Why the fuck didn't anyone think about this?

>>377022072
If the portal were just a door, Afags would have a case in that the cube technically never moves. If the portal moves around the cube, what does it matter to the cube regardless of the portal's momentum? It should stay stationary, right? So it should just plop harmlessly out of the second portal with no momentum except that which the slope adds.

The problem is that portals impose their own set of rules and physics on objects they interact with. The blue portal is coming down on the cube, and it's coming down fast. As the blue portal engulfs the cube it does so from the top down even though the speed at which it's happening could make you think the process is instantaneous. It's not, the cube is rapidly being engulfed by the blue portal, it is rapidly running out of space which it can occupy, and thus it MUST rapidly emerge out of the orange portal. In essence, the fact that the blue portal swallows up the cube so quickly means that the cube is forced out of the space by its own mass, it can't stay in that spot, it has to come out of the orange portal and it has to do so as quickly as the blue portal is coming down on it. Since it emerges incrementally and quickly, it can be said that the portals have actually transferred momentum to the cube which would result in the cube flying out. The answer is B.

>>377022075
This is because the game fucks up its own physics. In the game a portal can't actually be completely pressed to a surface, there's always a modicum of space left between the surface and the portal. Portal physics also don't take everything into account, in the real world the object would be pulled through by its own mass even if the portal didn't slam completely down, although possibly at a slower rate of acceleration in the scenario.

>>377022076
See above. The cube would "jump" but the portal stopping halfway would provide additional resistance, you're correct.

>>377022227
Stop inventing fucking rules, the game clearly states that the only thing conserved is the body's own momentum. There's no functional difference between stepping into the portal and stepping into the door frame apart from the destination, it's a rip in space, not movement through space.

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so what now?

>>377022075
>Did nobody here play the fucking games? You can easily stage this scenario in the game
No, you actually can't. If you want to make A not look retarded, you've already failed to do so.

>>377022628
So what happens to the movement that is exhibited by the cube as it moves into the room containing the orange portal?

>>377016153
Scenario B would only happen if there was a vacuum like on the moon, or if the Cube's platform was the one racing toward the blue portal. Why would passing through a portal shoot you off? It's shown in the gameplay explicitly that you only gain momentum if you're already moving, you're not going to gain any momentum from standing in place, you'll just fall over via gravity.

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>>377022734
Your mom's throat on my dick.

>>377022538
The pistons do make physical contact, so all that momentum is transmitted from the moving piston to the piston that is stationary.

>>377022563
>the fact that the blue portal swallows up the cube so quickly means that the cube is forced out of the space by its own mass,
If that were true, you wouldn't be able to just stand between the two portals because you would either be thrown out or ripped in half, yet you can do it with no problem in-game.

>>377016153
B-fags can't wrap thier heads around 4 dimensional physics

>>377022901
The momentum from the cube is transferred to the piston?

>>377022563
This, the mass containing object that A fags claim is required for transfer of inertia is the cube itself. The portion of the cube on one side of the portal acts on the portion of the cube on the other side.

>>377022995
The cube has no momentum, it's stationary.

>>377023035
It is moving as it enters the room containing the orange portal, therefore it has momentum.

>>377022901
>If that were true, you wouldn't be able to just stand between the two portals because you would either be thrown out or ripped in half, yet you can do it with no problem in-game.
And like I said, portal's game physics are fucked. In the real world, if you put a portal on the ceiling and one on the ground and then jumped through like you can in portal, you'd quickly reach a velocity that would tear you apart. It's not even like falling normally, the portals are actively assisting your acceleration with each pass, as in the cube scenario.

>>377022995
The cube has literally no momentum you'd just fall out on the other side as soon as you go completely through the portal because the Orange portal will act like a solid surface when the blue portal is against the bottom

Bfags believe that if the piston stopped halfway down the box, the top half would go flying through the portal while the bottom half remains stationary.

>>377023143
It's falling down due to its own weight, I know it might be a difficult concept, but gravity does that.

>>377022760
There's no movement ffs. It's effectively teleportation

>>377023214

Except terminal velocity exists and is quite survivable for humans.

>>377023262
Wrong, the cube would "jump" but with lesser force. It would be partially pulled through by its own mass. See >>377022563

Explain how the falling portal is transferring its energy to the cube it isn't touching.

>>377023143
You're wrong it's sliding off the slanted surface if the surface was on the ground you'd be standing on the orange portal

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>>377023283
>>377023238
The cube is moving relative to the room as it exits the orange portal. What happens to this movement?

>>377023262
>Afags still can't say how fast the cube comes out of the orange portal

funny

>>377023324
How can it enter the room without moving? Do you think that the entirety of the cube is instantaneously transported as soon as any part of it touches the blue portal?

>>377023329
Survivable for humans when they have protection around them maybe. Astronauts can survive the immense g-forces acting on them while leaving the atmosphere but do you honestly think the human body exposed to equivalent force with nothing to take the brunt of it would survive?

>>377016686
Neither of them work

What would happen if the blue teleporter portal stopped half way on the cube.

Has anyone tried drawing a force diagram for this?

>>377022563
Listen, you either
a) take vidya physics as cannon, in which case A is correct
or
b) decide to apply /sci/ autism to a non-existent device, in which case the the falling portal effectively moves the entire universe along with it, and should cause the cube to be ripped into trillion little pieces

>>377023426
Or is the portal moving and the cube has no inertia you fucking mong.

>>377023510
You reach terminal velocity after falling for approximately 15 seconds. By your logic every person who has ever been skydiving should be dead.

>>377023214
> if you put a portal on the ceiling and one on the ground and then jumped through like you can in portal, you'd quickly reach a velocity that would tear you apart.
That's not true. I don't remember the name of the law theorem or whatever it was, but after a certain speed, even if you're being affected by a constant acceleration like gravity, your speed doesn't increase. That speed may be enough to kill you, but it doesn't works like your example.

>>377023661
The orange portal is moving? Because the orange portal being stationary is an intrinsic part of the concept.

>>377023426
It's literally not moving though it's just passing through again it's like a window think of one side of the window as blue and one as orange. Now someone (the piston) is moving that open window around your body. Your body still has no momentum you don't suddenly fly out the other side.

>>377016153
>>377016686
>>377016905
>>377017390
>>377019105
>>377019123
>>377020995
>>377021120
>>377021678
>>377021949
>>377022429
if a door runs at you fast and yo ucan go still does it make you fast or does it just run through it you fucking retards

>>377023780
The orange portal exhibits no force transition though. It literally doesn't matter if it's moving

>>377021525
The cube isn't moving as no external force has been exerted on it, the portal simply moves around the object. In order for the object to move you need to give it a force first.

>>377023480
Ever used an escalator? Portal is an escalator and you're suspended above it

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>>377023657
>decide to apply /sci/ autism to a non-existent device, in which case the the falling portal effectively moves the entire universe along with it, and should cause the cube to be ripped into trillion little pieces
Oh dear, it's retarded. That's not how relative momentum works in this case you fuck, the portals are in the same room but are only acting on a single object, the cube. The portal isn't engulfing or acting on anything else, let alone the room or "universe" as you put it. I weep for Afags.

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>this thread

>>377023782
It moves through the room it enters, does it not? The only way that it could change position in the room without moving would be if the room itself moves around it, which would make either side of the argument moot.

If the portals are not stationary relative to one another then they would rip the object apart atom by atom.

>>377023824
What about the room it enters? What happens to the matter that used to be where the cube now is? By your logic the matter should not be displaced because the cube has not changed position, so what happens to it?

>>377023872
Not him, but it's retarded to say that the portals only affect the cube, fuck me, defeating Glados requires opening a portal to space, which means that vacuum IE literally nothing can be moved through it as well. The portal doesn't magically choose what goes through itself, it lets everything through, air, void, and gravity.

>>377016153
this situation is not a physical reality. momentum is not conserved in any reference frame while using these 2D portals

>>377023824
You're still thinking that portals push things out of them. When the portal on the blue side comes down you'd just move out of it. Your body is on the orange side but your feet are still on the blue side. When that blue side hits the bottom you're fully on the other side because now the orange portal is a solid surface and you fall

>>377023692
You ignored what I said about the portals being their own factor of acceleration. The forces acting on you if you could jump through the portals in real life would be greater than just falling normally.

>>377023716
So what happens if your acceleration increases with each pass, well beyond terminal velocity? It's hard for me to imagine any scenario where you wouldn't just die and then be torn apart, if not by gravity or the force of acceleration acting on you then the sheer air resistance itself since eventually it'll exceed thousands of miles per hour.

>>377024042
Yes but in a room that's not a vacuum where the air pressure is equalized it's a moot point. The idea of the portal moving the universe around it just because relative momentum is acting on a single object is the most backwards-ass thing I think I've seen in these threads.

guys it's ok, the experts are on the case

>>>/sci/8911770

>>377024106
>Portals exert force on the objects moving through them

When is this ever said in either game?

>Well beyond terminal velocity

That's not how terminal velocity works.

>Have seen this shit image for years
>In elementary school argued for A
>Was a brain dead retarded fuck

>Went to college
>Took Physics 101
>Literally plain as day can tell its B
>tfw Im no longer mentally challenged

>>377016686
but the thing isn't speedy

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For you all using the argument that the cube isn't moving. Everytime.

>>377024309
Looks like you failed your physics course senpai

>>377024106
>So what happens if your acceleration increases with each pass
By your example, it won't. Portals don't increase your acceleration, and if they could, you wouldn't be able to stand between the two without being torn apart.

>>377024375
actually one of the few classes i got an A in. That course was just basic math

B fags:

Let's say the blue portal crashes down on the cube, except it suddenly stops about 3/4 down the cube instead of at the platform. Would the momentum the first 3/4 of the cube had coming out of the orange portal be enough to pull the remaining quarter upwards through the blue portal?

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If you believe that the cube is not in motion as it exits what would happen here?

wont it just show its part halfway?
I mean the portal didnt swallow the base of the cube where it is standing, therefore it's still rooted into that ground

>>377024345
>blue portal is an inertial frame of reference
>MUH RELATIVETEEY

>>377024284
>>377024420
Wait, I was thinking about this the wrong way. I was about to draw up another example of net acceleration gain from the portals but you're correct that just passing through portals normally, even while falling, has no effect on acceleration. Yet in the cube scenario, because of the space being swallowed up and the cube's need to emerge rapidly from the orange portal, I hold that the answer is B.

>>377024631
>This kills the Afag

>be B fag
>just minding my own business standing in the door shop
>suddenly a door frame comes falling from above
>dont move, figured it would look cool if it fell around me
>it falls around me and Im instantly projected into the air at the same speed the frame was falling
>contemplate my life choices as I fall to the ground and die
>oh why didnt i believe in A?

post the webm so these annoying autists stop

>>377024870
now you just need to add the fact that one side of the door is moving while the other is not

>>377024345
>Muh relativity

At no point is the cube moving on the one on the left. It has "relative velocity" in the sense that the cube looks like it's moving to an observer. But it's not actually moving. The portal is moving around the cube. If the portal stops moving then literally nothing happens to to the cube. Portals have never been stated to affect the momentum of the things passing through them.

In fact, the game specifically says that portals don't affect momentum: "Spectacular. You appear to understand how a portal affects forward momentum, or to be more precise, how it does not. Momentum, a function of mass and velocity, is conserved between portals. In layman's terms: speedy thing goes in, speedy thing comes out.".

>>377024773
By that logic everything that passes through a portal will gain speed while passing through a portal.

>>377024870
The door frame scenario has been disproven as a false equivalence. It is still B, retard-kun.

>>377024631
it pushed the second cube out the way and falls to the ground due to gravity...

did i just fall for bait? like thats too stupid a question to BE bait but...

>>377024993
>By that logic everything that passes through a portal will gain speed while passing through a portal.
That's originally how I was thinking about it, but this isn't always the case. If an object is just moving through the portal of its own accord with no sense of urgency then it'd be hard to say acceleration is gained from the object being pulled through by itself, but in the case of the cube this is almost exactly what's happening because momentum can be observed. The cube must emerge from the orange portal from the top down and it must do so as fast as the blue portal comes down, that's the bottom line. There's no way around it.

>>377016153

SPEEDY THING GOES IN

SPEEDY THING COMES OUT

B-fags are the flat earthers of /v/.
A portal is a hole. There are no special physics aplied to objects moving through it. A stationary object passing through a hole does not accelerate. Go back to school, dipshits.

>>377024631
Not sure what you're trying to prove here m8. The second cube would exist in both orange and blue portals, and will be displaced by the first cube.

>>377025228
Try reading the arguments ITT. Afags are currently being set on fire.

>>377016153
>bfags think relative velocity is the same as momentum
fucking brain damaged all of you

>>377024993
>But it's not actually moving. The portal is moving around the cube.
I don't think you understand relativity.

>In fact, the game specifically says that portals don't affect momentum: "Spectacular. You appear to understand how a portal affects forward momentum, or to be more precise, how it does not. Momentum, a function of mass and velocity, is conserved between portals. In layman's terms: speedy thing goes in, speedy thing comes out.".
Thanks for proving B true. The cube has momentum relative to the orange portal, so he should go out at that speed.

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This is how retarded Bfags are.

>Oh no, an open door is fast approaching
>I better brace for my sudden take off at high velocity once this door impacts against the wall behind me

>>377024631
The cube is moving through space but it has no momentum. It would push the other cube aside just to make room for itself. Literally the only force that is applied on the cube is gravity. As soon as that blue portal hits the bottom of the platform the cube will slide off the now solid surface of the orange portal

>>377025448
See >>377025028 and >>377022563

B fag, can you explain to me how the sube suddenly giants moment even though its moving from a still object and still air to another still object and still air? There's nothing that that that would make it gain momentum.

>>377016153
>portals conserve momentum relative to the frame of reference
>lovebox has no momentum
>conserving nothing
It plops out pulled down by gravity.

>>377025259
>>377025145
How can the first cube exert force on the second cube to displace it if the first cube is not moving?

>>377025028
How is it a false equivalence? What do you think a portal actually is? I guarantee what you're imaging is wrong, and you have brain damage.

>>377025551
Because as the portal envelopes the cube, the cube must also exit from the orange portal at the same speed the blue portal takes it in. It doesn't just plop out of the orange portal instantaneously, the top of the cube emerges first and then the rest of the cube emerges behind it, as quickly as the blue portal forces it to. The cube is literally being forced out of its former space by its own mass at an accelerated rate.

>>377025190
>>377025440
It "emerges", yes, but it's not moving. The portal is merely moving around it.

Think about it this way: if the cube adopts to the velocity of a moving portal, what happens in the opposite case of an "exit" portal movie backwards? Does putting a cube in the entrance portal immediately make the cube come flying back out of the entrance? According to B, it would, but that doesn't make any sense.

>>377025664
Show me a doorway where the entrance is in motion and the exit is stationary.

>>377025664
See >>377022563

>>377017570
Except the developer says it would be B if they actually coded for said scenario.

>>377024870
It's not just the portal, from the point of the cube, the whole world after the portal is flying towards it.
So from the cube's point of view it's not the cube that moves, its the world that keeps moving. That's how relativity works.
The falling door/window/hoop thing only works if the portals move at the same speed, so the world would be in rest relative to the cube.

>>377025745
It's not being forced anywhere.

The portal is just a link between the frames of reference.

>>377019003
The cube isn't going any speed, it's the piston portal that's moving. It stops when it collides with the platform the cube is sitting on, the kinetic energy of the piston is transfered to the platform. There would be a bang and some vibration on the platform but no kinematic energy transfered to the cube itself.

>>377022563
The cube isn't running out of space there's no immediate need to get to the other side because there's no compression . Imagine if the portal was moving slower. It'd look like you were growing out of the orange portal with half your body on the blue side still feet on the ground. When the blue portal touches the ground the orange portal will be a solid surface with you standing on it

>>377025790
>The portal is merely moving around it.

But the orange portal isn't moving.

>>377025649
because the first cube is exiting through the portal with 0 momentum. its like falling on a dildo. the dildo doesn't just suddenly gain momentum because its passed through your sphincter.

>>377025745
Why aren't people accelerated when they pass through these holes? What makes a portal different?
https://m.youtube.com/watch?v=ucKk_H71B74

Bfags are delusional cucks who contradict themselves. If you're gonna use relative speeds of blue portal and a stationairy cube as an argument, you have to explain why the vector of velocity changes relative to the blue portal. The only explanation is that the vector stays the same, only relative to orange portal now. But the orange portal wasn't moving relative to the cube, ever, so your argument is fucking retarded.

File: 1466352165358.png (741KB, 1024x1024px) Image search: [Google]

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>>377021509

Why is this so underrated.

Bfags: It's B because momentum is relative and conservation of momentum
Afags: it a cuz uh doors uh doorway uh hula hoops uh holes uh me not smart

>>377025896
but the first one is wtf are you retarded

>>377023510
You do realize skydivers hit terminal velocity all the time right and they don't have anything that limits the amount of forces upon them right

>>377025649
I just told you, senpai. The second cube ALSO exists "inside" the blue portal, meaning that it exerts force on the first cube upon contact, which exerts the same force on the second cube, while normal force of the table keeps the first cube in place.

>>377025864
>>377025880
This is simply not true. In the case of the portal moving slower, the cube is still emerging (read: moving) albeit slower, obviously. Look back to the example provided by >>377024631

In that example, if the dangling cube moves at all the momentum is being applied. If momentum is not being applied then the cubes cannot occupy the same space, so what happens if the blue portal continues to come down?

>>377021509
This. Now eveybody leave.

>>377026002
B-fags are actually dumb enough to think that holes can apply force to an object.

File: Afags.webm (718KB, 1280x720px) Image search: [Google]

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>this kills the Afag

>>377025962
The ting that makes it different is that the portals move relative to each other, and if you would put a camera on the cube it would look as if the world after the portal came flying towards it.

>>377025796
Portals are not objects. There's not one "half" of a portal. For all intents and purposes, they make 2 points in space the same exact space. Anything passing through "doesn't care" that it went through a portal.

>>377025896
Doesn't matter.

>>377025880
This. Imagine it's going slower. According to B, a portal slowly moving from top to bottom towards a cube would make the cube float.

This one is easy. Bfags are just dumb as always

Imagine the portal stops halfway through the cube. Does the cube fly out the portal? Of course not. I may be moving relative to the the portal but it isn't gaining energy from nothing.

>>377026002
Afags: the game itself proves you wrong, the cube has no momentum, so nothing is conserved, the portals aren't interacting with the cube
Bfags: I WATCHED BLACK SCIENCE MANS SHOW I KNOW ALL ABOUT QUANTUM ELECTOMECHANICAL THINGS NOW HURFODJGORJBG

>>377026215
A is still the correct answer

>>377025896
There's a confusion here. The blue and orange side of the portals aren't two independent things, they are sides of the same thing. If the cube was your body you would see the orange side move toward your feet after the blue side passed your eyes.

>>377025931
That would occur after the cube is fully emerged, but what about as it is emerging? How does it leave the portal at all if the other cube is blocking it's path?

>>377026135
>meaning that it exerts force on the first cube upon contact
How can either cube exert force on the either if they are both stationary?

Think this: Momentum is relative. Compared to a car, the world around them is moving 70 miles per hours behind them, but compared a person standing, it's the car going 70 MPH.
Same applies here. Momentum of the portal is X, and the cube is 0, is the same as the momentum of the portal being 0, and the cube being X. the same net speed applies, the cube is coming towards the portal at the speed of X, from either the portal moving or the cube moving, and launches out at the speed of X.
Sadly, If I recall correctly, the GAME engine registers it based on the object's speed and not the portal's speed - in real life, B would apply, and in the game, A would apply.

ok B-fags, if you put your finger through the portal, does it just fucking rip itself from the hand?

>>377026171
You still occupy a space. The cube would move because half the portal cube is still resting on a surface on the blue side

>>377025259
>>377025145

So the cube moving through the portal transfers it's momentum to the dangling cube (causing it to swing proportional to the speed at which the first cube is extruded). Therefore the cube going through the portal has momentum. A argues that, after leaving the portal, all this momentum disappears.

I think it's time to accept, fellow Bfags, that Afags are immune to logic. They have consistently brushed off every single example and theoretical application ITT and continue to believe that their doorway bullshit is a valid explanation despite how many times it's been disproven.

The stubborn stupidity is painful to look at but what else is left when you can't cure it?

>>377021509
this

>>377026223
The world IS NOT being accelerated though. The hole is. The object would move through the same as if the exit portal was on the exact opposite side, like a hole.

>>377016153
Relativity is accounted for in A though.

Lets do an easy little experiment at home.

Take a piece of paper and cut a hole in it about the size of your fist.

On one side mark A. On the other mark B. Congrats you made a portal.

We can now do the experiment with our portal


take a small object that you can fit through the hole easily (golf ball for example) and place it on a flat surface.

Now take your portal and slam it on the table so your object goes through the hole.

What happened?

Does the speed you slam your paper affect how high the object goes?

>>377026552
Wrong the cube on the string moves because the cube in the portal is still resting on a solid surface so it will would shove it aside because the string cube is now acting against the ground on the blue portal side

>>377026269
but the kinetic energy from the movement of the platform must go somewhere, it doesn't disappear

>>377026215
I believe in a C scenario - say it moves at speed x and the blue portal moves at speed p. The rocket first moves at speed x. Then, as it emerges from the orange portal, it moves at speed x-p, as that is the speed at which it enters the blue portal (relative to the blue portal, not the ground). So, it exits at that speed, but then returns to it's original speed, x. Though this part is especially sketchy, it must obey the laws of conservation of energy. So either it somehow goes back to speed, or releases heat or something as it slows down through the portal.

>>377026456
>they are sides of the same thing
Exactly, so your speed relative to the orange portal would be identical to your speed relative to the blue portal. If the blue portal is moving towards you at 100mph, your speed relative to the blue portal is 100mph. Since the orange portal is the same object as the blue portal your speed relative to the orange portal should remain at 100mph, but in A your speed relative to the orange portal instantly becomes 0.

>>377026215
B would be correct if it flew at it's actual speed once its apparent speed was no longer affected by the blue portal. Because the blue portal doesn't change how fast an object in it moves. It changes how fast the object APPEARS to move.

>>377026765
>so it will would shove it aside
So the first cube is moving as it exits the orange portal?

>>377026849
If a hole moves toward you at 100mph, do you accelerate when you jump through it?

>>377026737
it's not the same, since both the exit and the entrance are in motion

File: 1494867427537.png (278KB, 1500x897px) Image search: [Google]

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>>377026481
There, you dense fucker

>>377026940
You JUMPED through it. So yes

>>377026940
My speed relative to the both sides of the hole would remain the same, which is what happens in B.

>>377027032
So you move through at the speed you jumped through it, or that speed + 100mph?

How come no one actually "hacked" portal to enable it to stay on moving platforms to test this out?

>>377027012
how dumb is this guy really?

>>377027012
So your argument is that the room containing the orange portal is itself moving? Because if so that negates the whole point of this discussion.

>>377026801

One could just as easily argue that kinetic energy can't just "appear" on the orange side (the energy of the cube plus the energy of the blue portal wall slamming into the platform is greater than the energy of the blue portal wall pre-contact).

Arguments from energy are invalid, as we already know that even stationary portals do strange things to energy (such as creating infinite energy via gravity).

>>377025974
>>377026210
>>377026309
>afags are this retarded

>>377027140
They have. There's a webm of it. As well Portal 2 works under A being correct.

>>377026849
No. As you pass through the portal you see that the orange side IS moving and comes to a halt when the piston with the blue side collides with the platform you are standing on. This is where that 100mph force is going, to an impact between two solid objects.

>>377026938
Do you not get that the cube is still resting on the ground? The cube on the string has to move aside because even if the object has no momentum the ground can't move aside and objects can't occupy the same space

>>377026215
Option C.
The rocket would be torn apart as the space stretches around it.

>>377027340
The portal isn't a solid object it's a hole

>>377026595
The world is accelerated relative to the cube. That's how relativity works. There is nothing in the universe that's the point scientists base movement calculations on. Every movement is measured relative to an other.
When the cube leaves the portal it has a movement relative to the world, and that movements doesn't just stop, so the cube continues its movement.

>>377027220
It moves in the first cube's frame of reference, it's self-evident

>B
>put Portal on moving platform
>send platform down quickly to stop so your body is halfway through
>body gets ripped in half because the half that goes through the portal gains energy and rockets off the bottom half of your body which is still staitonary on the other side of the portal

>>377027340
>the orange side IS moving
It is a given in the scenario that the orange portal is stationary. If the orange portal were moving it would make both sides of the argument moot.

>>377027001
The exaple is a colapsed version.
If one side of the portal is moving then they are both moving.

The paper with the hole is showing what happens when a portal is made.

If both portals where moving in 2 different directions my example would still hold true

>>377027414
>The cube on the string has to move aside
Where does that movement come from?

If both cubes are stationary, neither of them can move. The point is that the first cube obviously pushes the second cube out of the way, and the only way that is physically possible is if the first cube is in motion.

The answer is A.
A portal is a hole in space. That's all it is.

>A moves at 40mph to envelope B and is ejected at C which is moving at 40mph for a net change of 0
This is a door

>A moves at 40mph to envelope B and is ejected at Cwhich is moving at 0mph for a net change of 40
This is a non existent portal anons are sperging about.

The numbers must be equal not counting gravity and wind resistance.

>>377027494
The piston it's on is a solid object though, that is what is moving the portal, and when the piston stops because of a collision the portal stops moving.

>>377027516
>When the cube leaves the portal it has a movement relative to the world, and that movements doesn't just stop, so the cube continues its movement.
No, that's not the case.
The world is moving and the world suddenly stops. That's it.

If a car moves towards you at 100 km/h, you're moving relatively to it at -100km/h. But if it suddenly stops moving, you suddenly stop moving relative to it. So if the world is moving (cube moving relative to the world) and the world suddenly stop, the cube won't fly out because it also stopped moving relative to the world.

This whole thing is just an argument about a discrete vs continuous universe. If everything is continuous then A happens and if everything exists as discrete particles then B happens.

>>377026215
That's not how portals fucking work. The ship would maintain its speed, it would not suddenly go slower.

>A-fags in charge of understanding coordinate systems

I swear if I read this hole/door/hoop thing once more-

>>377027864
The hole has no momentum it's just a hole that connects to a different space.

https://www.youtube.com/watch?v=3fg5bOa7wiU
>this was 5 years ago
Kill me

>>377027731
Two object cannot occupy the same space, thus there is displacement. The hanging cube is the one that is "moving" because it is on the other side of the moving portal. The more apt observation is that the cube on the platform is not slamming into the hanging cube, the hanging cube is slamming into the cube on the platform since it is the one that is in motion relative to the "stationary" cube.

>>377027516
The world is NOT accelerated relative to the cube. Portals are holes, not magic acceleration devices. No force is ever applied on the cube.

>>377021509
/thread

>>377018606
>>377023798
Relatively speaking, the door would still be moving

File: portals_thiskillsA.png (21KB, 1400x500px) Image search: [Google]

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>>377027990
:^)

>>377028112
The space inside the door where you actually pass through isn't moving though. The portal isn't the door frame its the empty space in the door frame

Holy hell this thread is dumb. It's B because the floor the cube is on forces it to go out at the speed the blue portal approaches. If the cube was floating in mid air it would be A. It's like hitting a can off a table.

>>377028161
UH DOESNT COUNT CUZ ITS NOT 1 TO 1 WITH THE EXAMPLE ABOVE HULA HOOPS DOORWAYS HOOP DOOR DOORWAY HULA HOOP

>>377021018
One of the rules in Portal 1 states no moving portals. If you tried the portal would just fizzle out. Until portal 2 where it happens once and everyone forgets about it.

>>377028071
Portals are holes into reality, which means in the question reality is moving relative to itself. In reality neither A or B takes into account that two different points on the Earth's surface would have a number of other minutely or maximally different variables in energy and motion through space either.

>>377028247
Speed of approach is already accounted for and only comes out to be the speed at which the cube is revealed through the other portal.

>>377028247
There's no compression as the blue portal comes down which is what would cause that.

>>377027523
>the top half can't pull on the bottom half because I decided that chemical bonds can't exist across portals
>ignore the fact that this would mean any matter passing through a portal would be disintegrated into atomic gas

>>377028161
Speedy thing goes in, speedy thing comes out.

>>377028065
>The hanging cube is the one that is "moving"

So the movement of the blue portal causes the hanging cube to move relative to the first cube? I thought that portals couldn't effect the velocity of an object?

File: orange.png (4KB, 700x400px) Image search: [Google]

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Lets thing about this from the orange portal's perspective

>>377028065

So both cubes are moving from the perspective of the other, yet only the hanging cube has momentum in your narrative.

>>377028453
What causes it to get sucked through the orange portal?

From the portal's perspective, the cube is approaching the portal. If you imagine a coordinate system that starts outside of the orange portal, goes through it, and then comes out the blue portal, you would see the cube moving along said coordinate system and not being stationary. In order for A to be true, the portal would have to somehow be able to measure the cube's velocity in terms of absolute space and ignore the relative velocity that it measures.

The problem is drawn from a third party perspective which is not moving relative to the platform but which is moving relative to the portal, which is different from the relevant frame of reference/coordinate system.

>>377028392
>I decided that chemical bonds can't exist across portals
I think you're misunderstanding that anon. He's saying that your body would be pulled apart because of the speed. If you look at the animation in the OP, the portal (cube) is flying extremely fast. If just your head accelerated from 0 to some insane speed while not the rest of your body, it wouldn't be able to pull you out through the portal. Best case scenario, a broken neck and you're dead.

>>377028161
The object would continue moving at the same speed regardless of the hole. You're small mind can't imagine a scenario where an object passes through a moving hole, but it's a very easy experiment to reproduce. Give it a try. ;)

>>377028472
Objects can't occupy the same space. The hanging cube is acting against the ground the portal cube is resting on. There's no momentum involved in this movement. The portal cube is encroaching on the space of the hanging cube one of them has to move and the portal cube is sitting on a surface and thus has more force

>>377028048
Right, then there is no momentum to cause the cube to fly out the other side.

File: 1494845857661.gif (67KB, 500x364px) Image search: [Google]

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>>377016153
Wrong.

>>377028523
In your image the piston is directly applying force to the cube. It's not a different perspective, that's a completely different scenario.

If portals like this could even exist in real life they wouldn't be able to move relative to each-other so this scenario could never take place anyway.

If you looked up at the portal moving down at you it would look like whatever inside it is moving towards you.

Now, imagine if the cube and orange portal were both moving upwards at the same speed. Once the cube goes through the blue portal, would it come out the orange one at double the speed?

>>377028741
>There's no momentum involved in this movement

The objects have mass and they are moving. You can't have this and have no momentum.

>>377028661
Saying that from the hole's perspective the object is rapidly accelerating towards it, doesn't change the fact that the object is not in motion.

>>377023798
>Replaced the huula hoop with the door.
You're a fucking idiot trying to think of it like a door. Portals are not doors. They are bends in space so if a portal is moving it is making the space behind it move relative to you.

>>377028940
There's no momentum in the portal cube. The ground is causing the hanging cube to gain momentum because the hanging cube is now pushing against the portal cube

>>377029018
This is wrong. A portal is a hole. Nothing more. You are making up bullshit in order to create a scenario where you are correct.

>>377028623
The hanging cube is moving relative to the stationary cube and the Earth, the stationary cube is named the "stationary" cube because its movement is that of the Earth so that variable cancels. If you hold your hand in the air "stationary" and then slap it with your other hand the Earth velocity of your stationary hand doesn't factor in and the only relevant movement to the equation is the hand that you are moving relative to both your stationary hand and the Earth. The hand that is stationary relative to the Earth is the "fixed" point of reference, and your stationary point of reference is important in physics to determine how two objects will interact. Hence why the hanging cube slams into the cube on the platform and not the other way around.

Questions for Afags:

1) What happens if I jump through a stationary portal to a stationary portal?
2) What happens if I jump through a stationary portal to a stationary portal on the inside of a bus?
3) What happens if I reveal that the bus was actually travelling at 100 mph relative to the first portal?
4) Do you think a person standing in front of the first portals of case 2 and 3 would be able to spot the difference between the two cases?

>>377028852
A fags can not comprehend that that Scenario B in your gif is the exact same as OP scenario B because of relativity. I want to see A fags read up on light speed and see their brains burn because it doesn't make sense to them.

>>377028983
b-but relativity

Bfags critical flaw is thinking that relative velocity is preserved between frames of references, and that the relative velocity of one object is imparted on the other.

Example of B logic:
>You are standing still, and something is moving past me at 10mph
>according to that object, you are moving 10 mph
>therefore if that object stops, you are moving 10mph

But of course, that's stupid. You were never moving.

>>377029076
>The ground is causing the hanging cube to gain momentum
So the movement of the blue portal causes the hanging cube to gain momentum?

File: portalfags.png (80KB, 984x447px) Image search: [Google]

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Let's make this more interesting.

See, there's a problem here. Both scenarios make sense, depending on which frame of reference you're looking at.

Saying A or B is right or wrong or retarded is actually the most retarded thing to say.

>>377027871
The world doesn't just stop, Google Inertia. The world and the cube keep movement relative to each other. It like when you jump out of a moving train, you keep the movement of the train, even the train stops a split second after jou jumped.

File: Relativity_an_apple_in_a_lift.png (6KB, 270x230px) Image search: [Google]

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>>377028983
because B doesn't see the apple in motion, does it mean that it's not in motion at all, even relative to A?

File: scenario C.jpg (72KB, 1000x728px) Image search: [Google]

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what would happen if the blue portal came down then stopped while the cube was halfway through the portal? would the cube stay put or be pulled through the portal?

>>377016153
All of this is implying that the portal stays open when the surface it is on moves....

>>377028161
There are 2 possible cases and it's neither "same speed" or slower.
a) Atoms of the cube would keep going at the same speed out of the portal but because of the speed difference they would split their bounds and the cube would disintegrate into atomic dust.
b) The atomic bounds are so strong that the first atom that goes through the portal would pull out the rest of the cube at a much higher speed, in your case the parts didn't go through the portal would accelerate to 19 m/s.

>when even with hula hoops afags are still wrong
W E W
>>377029229
You dumb

>>377016153
why can't it be C where it pops out but with less velocity than B but more than A

>>377029169
No you're retarded. It's a wormhole with poorly programmed physics.
https://www.youtube.com/watch?v=jJJJ8ptBozg

The space itself is moving in relation to you, and a wormhole is simply how your dumb meat brain processes it.

>>377029179
see
>>377029250

>>377029179

Both cubes are stationary relative to the earth, what kind of irrelevant tangent are you fucking about with. You say the hanging cube, which is stationary relative to the earth, is slamming into the blue-portal cube and thus has momentum, but you give no arguments as to why this is not equally true for the blue-portal cube.

>A fags
>here is why it's A (game lore, physics)
>B fags
>here is why it's B (completely made up bullshit by highschool dropouts trying to sound smart)

>>377028680
That anon was using his post as an example to try to prove that B is wrong. I was simply stating why his example fails to prove anything. I agree that at a sufficient velocity the high instantaneous jerk would result in death but with the right velocity the person could be safely launched through the portal.

>>377029229
If the object stops relative to you, you stop relative to the portal.

>>377029185
That is a good point.

In that case, I guess you inherit the velocity of whatever portal you come out of (and if you are part ways between portals, you''d have the velocity of both)

>>377029229
according to that object, you -would- be moving 10mph away from it
If the object stopped, you would also stop, because relative to eachother neither of you would be moving

>>377029280
The cube isn't moving. The world is. The word has the inertia, not the cube. The cube is moving only relative to the world.
The problem with your example is that I'm touching the train and therefore the train is transferring its energy to me. In the portal example the part of the world that s moving isn't touching the cube at all and it's not able to transfer the energy over to the cube. A better example would be if I was next to the train and the train stopped.

File: portals6.jpg (25KB, 829x944px) Image search: [Google]

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I mean in the end both A and B will break reality.

Or can someone tell me what happens in this scenario?

>>377029435
>basic physics is made up bullshit to flat earth tier afags
wew

>>377029408
>Both cubes are stationary relative to the earth
No because the moving portal means that reality at point B is moving relative to reality at point A. Frame of reference of the question. This is completely explained in the post you just responded to.

>>377029269

If you're an A-fag, then A.

If you're a B-fag then the particles already through the portal would impart their momentum to the particles not yet through the portal (imagine pulling on one end of a slinky and how the motion propagates down) which probably wouldn't rip you in half but would be pretty painful.

>>377029642
Piston is strong enough that the pillar breaks itself or the piston is weak and stops once the pillar touches itself in a naughty way.

>>377029767
Would you say it would be extremely painful?

>>377029618
In the portal example the world on one side of the portal is moving relative to the other side, that's where the movement comes from.

>>377029294
Depends on the velocity and mass.

We know for a fact that matter passes through portals without being disintegrated. This means that chemical bonds between atoms that are on opposite sides of the portal interface are not destroyed.

Portals aren't real and inherently break the laws of physics.

Neither A nor B would happen because portals don't exist.

>>377029618
but the cube gets displaced in space and it appears with a speed relative to the moving portal

>>377029205
>that Scenario B in your gif is the exact same as OP scenario B because of relativity
Relativity has been proven wrong a decade ago.

File: laulsuli.png (40KB, 126x155px) Image search: [Google]

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Portals don't create a force
But they are just holes

>>377029656

Considering the orange portal room and the blue portal room are presumably in the same reality, then you are now arguing that -both- cubes are moving towards the blue-portal cube yet you believe only the orange-portal cube has momentum.

>>377030014
>Relativity has been proven wrong a decade ago.
[citation needed]

>>377029435
>Einsteins special theory of relativity is made up bullshit.

>>377029205
>that Scenario B in your gif is the exact same as OP scenario B because of relativity
That's not how relativity works.
2+2=5 because it's relative. That's how fucking retarded you are.

reminder to report e-celeb threads like this one

>>377028852
This is correct

>>377030051
Yeah, and most holes don't have half of themselves moving, and other half standing still.

File: 1456605713192037654.png (179KB, 400x464px) Image search: [Google]

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>Bfag sits in a train
>passes through the tunnel
>suddenly flung in the opposite direction
>"CURSES, RELATIVITY"

Wasn't there a gmod gif that shown the reaction that will happen if the pic in OP happened?

>>377029514
But you see, interactions must be time-reversible. If you go inside the stationary portal at 100mph, and on the other side you go out stationary (your 100mph minus the 100mph of the bus), then the opposite must be true.

Meaning, you're stationary, the bus with the portal comes at you at 100mph, and you come out from the first portal at 100mph. Think of this as a reverse button on a video player.

File: 1493101909297.png (208KB, 853x1031px) Image search: [Google]

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>>377030320
They still holes

>>377030051
Portals bend space (change distance) and force is determined by distance between objects therefore portals exert force in a way. Force equations are taught in most highschools, 4chan is 18+, are you admitting to being in a GED program?

File: 1492396583778.jpg (254KB, 666x666px) Image search: [Google]

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If some object is stationary in front of the exit portal, and we do this experiment, the block is going to hit the stationary object regardless of A or B. So clearly the object must have non-0 velocity relative to the exit portal and the object, or else it would never have hit the object. So why, if that object were never there, would the cube suddenly lose all of it's momentum after fully leaving the exit portal?

>>377023428
The cube emerges at the same speed that the blue portal is travelling, but it doesn't go flying out.

File: 1490000767902.gif (4MB, 280x302px) Image search: [Google]

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>>377030394
>tunnels where the entrance is moving towards the stationary train and the exit is stationary

>>377030169
Then tell me, what is the ultimate reference point to calculate movement from?
It's not earth, that planet is circling the sun.
It's not the sun, that star is circling a black hole.
And that black hole is not the only one in the universe.
Their is no point to calculate movement from so every point is correct, including the cube itself.

>>377030559
see
>>377027012

A fags read this.
http://www.dartmouth.edu/~kevinhainline/relativity.html
Something written that even A-fag brains can understand.

While you may not be """moving""" if an object is moving at you, then you are moving at that object from it's point of view.

There is no such thing as an absolute point in space. There is no momentum from "nowhere" the momentum you seem to magically have going through B is from from the portal being moved at you and thus all the space behind it.
It doesn't matter if that portal stops behind you, you're already through it and inside a new frame of reference after it stopped moving. That portal you just exited was never moving on it's location. The entry point was the one moving, once you are through the portal it no longer has any bearing on you. Just like if the portal was moving at you, and someone was standing on the other side of the portal they would appear to be moving very fast at you, but to them they were standing still. If you had hit them, each of you would think you were both standing completely still! Yet a huge crash happened because the portals were moving, thus moving the spaces you were "Standing still in" towards each other at rapid speeds. Once you're through that portal even if it slams against an object and stops, you were already through the portal moving very fast. NOW if the portal had stopped halfway around you, then this gets more complicated. Any of your body part through the portal is going to be subject to the new frame of reference. While the parts of your body in the old one are subject to that one. So your lower half would feel like they were moving very fast and suddenly the rest of your body was being stopped. It seems bizarre because it looks like a hole, but even the vacuum of space there is still space-time. This is how things like gravity affect you in the vacuum. Space-time is being bent together and manipulated in weird ways. That's why B might seem so bizarre to you.

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>>377021509
it was A all along

>>377030014
Are you retarded? Movement, Momentum, Velocity, Speed, etc is relative.

>>377030541
Do you even fucking know what force is? Because it seems you only memorized equations and regurgitated them for exam and still have no fucking clue about what you 'learned'

>>377030832
uhh h-h-h-hoola hoop

the blue portal world moves towards the block
a not moving block put in a moving world will look as if it was moving for someone in the blue portal world

>>377030832
It depends entirely on the speed of the piston as well as the density of the fluid.

>>377030762
Another 'weird' thing is something like the speed of light is always the same even in relativity.

If you measure light moving past you, it will be the moving at C the speed of light.
If it is moving towards you it's still C.
If you are moving towards IT at the speed of light. And it's moving towards you? Then surely it would "Appear" to be moving at two times the speed of light at you? No it actually still appears to be moving at you at the speed of light. This is I believe due to things like time dilation. Physics is not like your normal every day life when you deal with these theoretical concepts, and the more you try to make it like your life on earth the more it's going to confuse you. This is why things like Huula hoops do not make good analogies because they are fundamentally different types of events.

>>377030892
Do you? Are you just upset because my insult was accurate?

Cant believe it

there is probably a reason the board /b/ is called "b"

>A-fags
>m-m-muh conservation of energy!
>in a game wherein you create infinite energy by putting a portal on floor and ceiling

You're still not explaining why the cube loses all of its speed at the exact moment that it completely exits the exit portal (yes, that speed that it needed in order to move through the exit portal)

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>>377030559
Because that's how portals have always worked. Load up the game and put an object halfway through a portal. Now break one of the portals, and the object is pushed out one side of the portal, stopping right at the edge of it. The object doesn't go flying across the room at the same rate it left the portal, it stops dead in it's tracks. The more absurd thing to say is that it would continue moving, because that's not how it works in the game.

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are you guys fucking stupid
this is what would happen, end of story

>>377030626
>Then tell me, what is the ultimate reference point to calculate movement from?
There is non. But that doesn't mean you aren't retarded.
The example in his B and OP's B are completely different.
In OP's B only the piston is moving relative to the cube. The world isn't moving and it's not giving any energy to the cube.
In the anon's example EVERYTHING except the piston on which the cube is is moving relative to the cube. The piston is directly transferring energy onto the cube.
Remove the top piston and let the bottom piston stop suddenly and the cube flies off because of inertia.

Relative point of reference doesn't mean energy is created out of thin air just because you change your point of view. All that a relative point of reference gives you is a much easier way of calculating movement because you can ignore some things that aren't important for you.

its A and even though I have a degree in physics I'd like to hear why people think its B.

1 the cube has no kinetic energy
2 imagine a scenario where the blue portal goes past the cube and continues to move
3 imagine also this scenario with everything in different positions, the cubes a person standing and both portals are vertical, the blue one on a piston and the orange on a different wall. for no reason would the blue portal make you move going out the second one

A wormhole is not equivalent to actually traversing that distance in a short time, but rather that the destination is "closer". Don't think of it as the object covering a large swath of distance in a short peiod of time and therefore of the box very quickly, but instead that the object had a lot less distance to cover than without the portal.

So yeah, A is the only one that makes sense. And where would the momuentum from B even come from? The portals don't transfer momentum

>>377031030
It seems your reading comprehension is also dogshit. No wonder you bomb problem solving exams. You're the square peg in round hole idiot

>>377031279
It's funny because Conservation of Momentum is why it is B.

>>377031279
>You're still not explaining why the cube loses all of its speed
It is transferred to the bottom thing/the earth. The top shit has speed, from the point of view of the top shit the box has speed, but regardless, when the two things collide, the top shit transfrs its speed to the bottom shit and vice versa, none of it goes to the box of course, just the system.

>>377031341
>1 the cube has no kinetic energy

Consider two points of interest. The first, when the cube is half way through the portal. The second, when the cube is fully through the portal. Clearly relative to the exit portal (the space we are most concerned with here) the cube was moving, since it fully exited the portal. Hence it has kinetic energy.

By in-game physics, it's actually B:

https://youtu.be/S85nudR6D-Y?t=200

>>377026215
It would maintain the same speed it would just take the plane longer to get though the portal.

>>377031341
>1 the cube has no kinetic energy

And? Since when has conservation of energy ever applied to portals? Even stationary ones break it.

>2 imagine a scenario where the blue portal goes past the cube and continues to move

Since 1 is now irrelevant, this point is as well. Portals can create energy.

>3 imagine also this scenario with everything in different positions, the cubes a person standing and both portals are vertical, the blue one on a piston and the orange on a different wall. for no reason would the blue portal make you move going out the second one

I don't see how changing the cube into a person changes the scenario or says anything useful one way or another. Even if I agreed with A, what your 3rd point shows nothing.

>>377030832
B, if only because the piston is exerting pressure on the liquid. Ie, the movement isn't from the piston but from the liquid pushing itself out of the portal.

>>377031465
All this ad hominem and talk of exams and no refuting my point. I'm guessing you're under aged then.

>>377031341
>I have a theoretical degree in physics
It has an upward velocity when exiting the portal, which means it has upward momentum and can fly into the air.

>>377031672
DELET THIS

>>377031672
3:20

>>377031341
>degree in physics
>still does not know momentum is relative

>>377031316
Maybe you think that because those portals don't exist so you will never have a real situation with the same world moving relative to itself?
You should think with portals.

>>377031316
it's not created out of thin air though
the cube gets displaced in space and it emerges at the speed the blue portal is moving
if you were standing in front of the orange portal and looking in, you'd see the cube rapidly approaching towards you, since you are not in motion relative to it

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>>377031678
>It would maintain the same speed it would just take the plane longer to get though the portal.

So the plane gets longer or something?

>>377031639
Consider this: object C is 5 meters away from objct D; space is bent around them so that the objects are only 2m apart. Object C is now 2 meters away from Object D, yet no KE energy was transferred to or fro object C.

>>377021852
>>377025982
>>377026179
>>377026594
>>377028103
>>377030792
Samefag or brainlets

E= v^2*m*1/2 + m*g*h

v=0 of the cube
h= lets say 1m

so its A

>>377031875
Is the cube displaced in space or is the space displaced?

http://www.strawpoll.me/12971520

ANSWER

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>>377031672
DELETE

>>377031795
>It has an upward velocity when exiting the portal
Actually no it doesn't

>>377031885
yes

>>377031868
theyre theoretical as wormholes arent they?

>>377031993
But it does. The exit portal is stationary, the cube MOVES through it. The cube has velocity when exiting the portal.

>>377031885

Or the particles would temporarily not exist in this dimension. While objects teleport instantly in game, moving portals were not explicitly programmed into the game outside of scripted sequences so we don't know how they are intended to behave.

>>377021509
>The block never has any velocity relative to that surface
Both the block and the surface have velocity relative to the orange portal. Speedy object in, speedy object out.
If the blue portal moved down at 0.1m/s then yeah, A would happen, but it fucking slams down at a high speed, so the box goes in fast and must come out as fast.

>>377031875
>if you were standing in front of the orange portal and looking in, you'd see the cube rapidly approaching towards you, since you are not in motion relative to it
This. Imagine there's a brick wall down the middle of the room and all you can see is the orange portal. You look through and there's a box coming towards you at high speed. It wouldn't suddenly slow down when it exits the portal.

>/sci/ thread
>A-fags
>"i-it's obviously A", "duh, it's A, you don't need to prove it"
>B-patricians
>"here's a well-thought argument proving that B is the only possible scenario"

>>377032105
A wormhole is not a window though. So what's actually happening is that the distance between two points was "folded" and two objects got closer to each other without consuming the distance, therefore no velocity.

>>377031897
>space is bent around them so that the objects are only 2m apart
I don't know, I guess I'm a brainlet since I don't understand where you are getting this idea from nor understand what you mean by space being bent around them

>>377016153
>When these threads began everyone was saying A
>Everyone's instinct is A
>Tell people it's B
>Explain relativity and arguments for B
>See these threads surface again
>People began saying B
>Provide better arguments, diagrams, physical theories
>See threads starting with B
>A pickers are ridiculed

And people say nu-/v/ is wholly bad. At least nu-/v/ has some grasp of physics.

>>377016153
it's A. there is no force acting on the block so it won't shoot like that

>>377031979
walking through them yourself wouldn't be possible in that case, you'd need the portal moving so it could displace the space you are in

>>377032239
the sum of all integers is - 1/12

no its clearly not
vs
well if we ignore these facta, i have a clear argument its true...

>>377032339
To be fair, every time I restart this thread I alternate between A and B just to keep the shit flying.