Question

Prove that total momentum of a body before and after collision is conserved.

Answer 1

say two substances collided and let the momentum of the two objects be f1 and f2 after the collision the momentum of first object will be f2 and momentum of second object will be f1 thus momentum remain conserved

Answer 2

Momentum Conservation Principle. One of the most powerful laws in physics is the law of momentum conservation. ... For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
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