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A stone is dropped from a certain height...

A stone is dropped from a certain height which can reach the ground in `5 s`. It is stopped after `3 s` of its fall and then it is again released. The total time taken by the stone to reach the ground will be .

A

6s

B

6.5 s

C

7s

D

7.5 s

Text Solution

Verified by Experts

The correct Answer is:
C
`h =h_(1) + h_(2), (1)/(2)gt^(2) = (1)/(2)gt_(1)^(2) + (1)/(2)gt_(2)^(2), t_("tot") = t_(1) + t_(2)`
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