what is the difference between inertia and conservation of momentum

They come together, the first is used quantitatively. An object has more or less inerta (just like it has more or less mass or momentum), while the conservation of momentum is just a given feature of momentum.

>>8109066
>>8109066

>They come together, the first is used quantitatively.

>mfw I as a mathfag am asking a question and a physicsfag answers me

I'll try to be clearer :

which one is the most fundamental ?

which one can be derived from the other ?

>>8109078
>>8109078
http://www.physics4kids.com/files/motion_laws.html

>>8109118

>still not answering my question

inertia says the object will not change its trajectory (be it stationary) without any forces involved

conservation of momentum says the momentum of an object will be conserved which means velocity is conserved which means trajectory is conserved

so there obviously is a link between these two principles

which one is the most fundamental ?

>>8109138
did you even look at the link?
it was meant as a joke, but its all there at least

>>8109141

nowhere it explains the link between the two principles

>>8109149
are you shitposting? i seriously can't tell.

>>8109118
>>8109141
>>8109160

are you a retard ? oh wait, you are, I can tell

GTFO my thread, retard

>>8109178
>what are newtons laws, no but like which law is the main one
>thinks he's in a position to call literally anyone a retard

>>8109199

newton's first law is an empirical law, not derived from fundamental principles

nowhere in the link it even talks about momentum

leave my thread brainlet

>>8109205
motherfucker did you cheat your way through middle school ? Here, have a fucking wikipedia link holy shit en.wikipedia.org/wiki/Momentum

hey op, sorry about /sci/ being shitlords

conservation of momentum arises from deep universal symmetries (see: noether) - inertia is just a physical manifestation of this conservation

>>8109056
Inertia is the generalization of mass.
Conservation of momentum is a law usually derived from Newton's laws or principle of stationary action.
>>8109205
Newton's laws are a set of axioms that define a system that maps close to reality.
The usual first one is pretty much the definition of an inertial frame, and is in no way empirical.