Q.

A player caught a cricket ball of mass 150g moving at a rate of 20 m/s. If the catching process is completed in 0.1s, the force (in N ) of the blow exerted by the ball on the hand of the player is equal to

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answer is 30.

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Detailed Solution

Change in momentum =Impulse=|0.15 kg×0-0.15 kg×20 m/s|=3 kg m/s

FAv=ΔPΔt=3kgm/s0.1s=30N

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