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A balloon going upward with a velocity o...

A balloon going upward with a velocity of `12 m//s` is at a height of 65 m from the earth's surface at any instant. Exactly at this instant a ball drops from it. How much time will the ball take in reaching the surface of earth ? `(g=10m//s^2)`

A

5 s

B

5 s

C

10 s

D

None of these

Text Solution

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The correct Answer is:
A
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