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A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does
not rebound. It can be concluded that
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- The rubber ball suffers greater change in momentum
- The metal ball suffers greater change in momentum
- Both suffer the same change in momentum
- The initial momentum of the rubber ball is greater than that of the metal ball
- The rubber ball suffers greater change in momentum
Correct Option: A
As per the question, the rubber ball rebounds while the metal ball does not. So if m and v be the mass and velocity respectively, the change in momentum of rubber ball = 2 mv (in magnitude) However, the change in momentum of the metal ball = mv The rubber ball suffers almost twice the change in momentum as experienced by the metal ball.