(a) In Figure 7.5, what is the momentum of the ball during the collision?

(b) Is the momentum of the ball constant before, during, and after the collision? If so, why? If not, why not, and for what system is the momentum constant?

Transcribed Image Text:

Figure 7.5 At the instant the ball in this elastic collision has zero velocity, all its kinetic energy has been used to deform the ball (and, to a lesser extent, the wall). Thus, this energy is stored temporarily as elastic potential energy. kinetic energy 7=0