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Standard XII
Physics
Second Law of Motion
Question

A metal ball does not rebound when struck on a wall, whereas a rubber ball of same mass when thrown with the same velocity on the wall rebounds. From this it is inferred that:
  1. change in momentum is same in both.
  2. initial momentum of metal ball is more than that of rubber ball.
  3. change in momentum in rubber ball is more.
  4. change in momentum in metal ball is more.

A
change in momentum is same in both.
B
change in momentum in metal ball is more.
C
initial momentum of metal ball is more than that of rubber ball.
D
change in momentum in rubber ball is more.
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Solution
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Rubber ball has got more elasticity and the change in velocity is more in case of rubber ball which proves that change in momentum of rubber ball is more.

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