Question

what is momentum conservation​

Answer 1

Answer:

Conservation of momentum is a fundamental law of physics which states that the momentum of a system is constant if there are no external forces acting on the system. It is embodied in Newton's first law (the law of inertia). Suppose we have two interacting particles 1 and 2, possibly of different masses.

Answer 2

The total momentum of two objects before collosion is equal to the sum of the total momentum of the objects after collision.