State and explain the law of conservation of momentum?

Answer 1

The law of conservation of momentum is Newton's 3rd law'

The vectors sum to zero: 0 = F1 + F2 = dp1/dt + dp2/dt = d(p1 + p2)/dt =0.

Thus, p1 + p2 = a constant, thus, the conservation of momentum.

Answer 2

The law of conservation of momentum states that momentum can neither be created nor destroyed; the total momentum of any closed system must remain the same. Momentum is mass times velocity. Thus, a ten pound object moving at 5 meters per second has the same momentum as a 2 pound object moving at 25 meters per second (for example). In order to alter the motion of one object, you have to transfer the momentum to another object. Now, this principle is not intuitively obvious, because we are constantly changing the motion of objects without seeing such a transfer of momentum. For example, if we start walking, our own momentum increases, where does it come from? In that case, it comes from the planet Earth. Since the Earth is so large, when we transfer momentum to or from the Earth, we never see a change in the way the Earth is moving. The change does happen, but it is not observable.

Answer 3

The law of conservation of momentum explains that momentum is neither lost of gained.
"when two bodies collide with one another, the total energy remains constant"