A 1.0-kg ball has a velocity of 12 m/s downward just before it strikes the ground and bounces up with a velocity of 12 m/s upward. What is the change in momentum of the ball? A)zero kg . m/s B)12 kg . m/s, downward C)12 kg . m/s, upward D)24 kg . m/s, downward E)24 kg . m/s, upward

Question

Quizplus · Accepted Answer

The change in momentum is calculated as the final momentum minus the initial momentum. The initial momentum is 1.0 kg * 12 m/s downward = 12 kg·m/s downward. The final momentum is 1.0 kg * 12 m/s upward = 12 kg·m/s upward. The change in momentum is 12 kg·m/s upward - (-12 kg·m/s downward) = 24 kg·m/s upward.

A 10-Kg Ball Has a Velocity of 12 M/s Downward Just