Can anyone explain the law of the conservation of momentum in simple terms please?
Retsum is right. Action and reaction are equal and opposite. That’s what Newton said. In other words, if you push me, I push you back. It can be shown from Newton’s laws that change in momentum = force causing change x time So, if the force I exert on you is equal and opposite to the force you exert on me, and goes on for the same length of time, my change of momentum is equal and opposite to your change of momentum, and the total amount of momentum is constant.
