Tell me if this is a correct assumption or not
someone kicks an object while standing in front of it, half the force would push on the object, the other half will push back on the person, correct?
now if someone slides into the object as they kick and are already in motion, will 100% or closer to 100% of the power from the kick now go into the object?
the idea being the forward slide cancels out the backwards push of the kick, which means the leg is now extending into the object more rather than pushing the kicker backwards
dumbass
>>8775706
be nice
Yes, also according to newtons third law, no object ever moves.
>>8775704
Not really a good way of looking at it.
"Half" the force is confusing.
>The leg is exerting it's full force F on the wall. Thus, F force is exerted by the wall on the leg
This is better.
Now, for the second part, just as much force goes into the object, at lease if I get what you're saying. And so just as much goes into the guy. The force will make him stop. Well, I assume that's it's great enough to stop him completely, I thought that was the point of the problem.
Anyways, I kind of get what you're trying to do, but honestly good luck without the basics.
F=ma, P=mv, E=0.5mv^2, etc. Learn these, practice, do your best to understand them. Once you do that, more or less doing what you're doing now, you can solve just about any classical physics problem without having to regurgitate what a teacher told you to use.
>>8775704
so if they slide into the object as they kick
instead of the kick pushing them back, the kick will stop their sliding motion
it's that simple
>>8775760
so based on what you're saying. Let's say the object is a free swinging punching bag and has a pressure sensor, and it reads 100 when standing still and it gets kicked
then in the next one he slides into it, and we assume the slide isn't adding extra force, it's just enough to cancel out the backwards push. When he kicks the bag it should still read 100 and not any more?
>>8775771
I really don't get what you're saying by "isn't adding extra force" and "it's just enough to cancel out the backwards push".
Id like you to specify, is the guy just hitting the wall with his feet while sliding, or does he kick and finish the kick at the same times he touches the wall? Basically if his feet is moving faster than in the first scenario yeah he should impart more force.
But again it's hard to help you without defined math terms. Really dude just do force problems beforehand. If you didn't start with kinematics.
>>8775780
I'm just trying to figure out if karate bro science is true or not
the claim: you have to slide into your kick because if you do that more force will act on the object you are kicking instead of on yourself
and so it's true, if you are moving towards the thing you are kicking it hits harder, but I'm not sure if that's an illusion because there is added force from the lunge forward. Or even if it's just because it causes your leg to extend deeper and gives the illusion the object got hit harder, when really it just got pushed further because you extended deeper into it
>>8775793
Well of course it's because you're going towards it. If your feet is moving faster relative to the object right before contact it's going to hit hard. And no that's not just an illusion.
>>8775793
The force would be greater because you are a moving object, but the percentage of distrubution between you and an immobile object would not change.