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A man in a balloon throws a stone downwa...

A man in a balloon throws a stone downwards with a speed of `5 m//s` with respect to balloon. The balloon is moving upwards with a constant acceleration of `5 m//s^2`. Then velocity of the stone relative to the man after `2` seconds is.

A

10m/s

B

30m/s

C

15m/s

D

35m/s

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The correct Answer is:
D
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