Question

While catching a ball ,the cricketer withdraws his hands. Does this reduce the change of momentum of the ball? How is it advantageous?

Answer 1

A fast moving cricket ball has a larger momentum.The momentum of the ball has to be reduced to zero in order to catch .

---->When cricket player moves his hands back , the time taken to reduce the momentum of the ball to zero is increased.
----> Due to more time taken to stop the ball, the rate of change of momentum of ball is reduced and hence a small force is exerted on the hands of players. So, the hands of player do not get hurt.
--->If the cricket player stops the fast moving ball suddenly, then large momentum of the ball will be reduced to zero in a very short time , due to which the rate of change of momentum of ball will very large which will exert a large impact force on player's hand causing the injury to his hands.

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