change in momentum?

Question

what is the change in momentum in a bounce versus no bounce?

Answer 1

momentum is always conserved ideally however energy could be transferred or absorbed

Answer 2

What is crucial is the coefficient of restitution--or in plain words, how much energy is lost with the collision.

In an ideal situation where there is no energy lost--coefficient of unity--total momentum is conserved whether there is bounce or no bounce. In a real situation, momentum is not conserved.

Think about two billiard balls: one at rest and the other striking. All the momentum of the second ball is transferred to the second if the first stops and the other goes--in an ideal situation.

If one of the balls is coated with stickum, then the balls will stick and go at one-half speed--the two balls together will have the same momentum of the first ball alone (and of two balls, one moving, one at rest)

If there is deformation (and there always is in a real situation) there is friction and heat generated which subtracts from the momentum.

With a bounce, there is always some momentum conseverved.

With no bounce, there may or may not be--hard to tell without additional information.

Answer 3

Twice the momentum

Answer 4

Isn't Inertia? Could be Kinetic energy?