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In the above question, the time taken by the ball to come again to the water surface is
A. 2 s
B. 4 s
C. 6 s
D. 8 s

1 Answer

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Correct Answer - B
Time taken by ball to go in water and come back to water surface is
`t=2((v)/(a)) =2((19.6)/(9.8)) =4s`

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