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A ball of mass 400 gm is dropped from a height of 5m. A boy on the ground hits the ball vertically upwards with a bat with an average force of 100N so that it attains a vertical height of 20m. Find the time for which the ball remains in contact with the bat

A

0.12 s

B

0.24 s

C

0.36 s

D

0.48 s

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The correct Answer is:
A
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