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A balloon is moving along with constant ...

A balloon is moving along with constant upward acceleration of `1 m//s^2`. A stone is thrown from the balloon downwards with speed `10 m//s` with respect to the balloon. At the time of projectile balloon is at height `120 m` from the ground and is moving with speed `20 m//s`. Find the time required to fall on the ground by the stone after the projection.

A

4sec.

B

5sec.

C

6sec.

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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