A tennis player smashes a ball of mass m horizontally at avertical wall. The ball...
A tennis player smashes a ball of mass m horizontally at a vertical wall. The ball rebounds at the same speed v with which it struck the wall. Has the momentum of the ball changed, and if so, by how much?
Homework Answers
The change in momentum of the ball is
delta P = m v - m( -v)
= m ( v + v )
= 2 m v
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