Question

State the law of conservation of momentum and hence write the equation for the law
in the case of two bodies colliding with each other​

Answer 1

Answer:

The conservation of momentum states that, within some problem domain, the amount of momentum remains constant; momentum is neither created nor destroyed, but only changed through the action of forces as described by Newton's laws of motion. ... Momentum is conserved in all three physical directions at the same time.

Explanation:

The law of conservation of momentum is logically equivalent to Newton's third law of motion (the action-reaction law). Momentum is a vector quantity, so you need to pay attention to direction.

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