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A ball of mass 400 gm is dropped from a ...

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

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The correct Answer is:
`0.12 s`
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