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From a ballon rising vertically upwards ...

From a ballon rising vertically upwards at 5 m/s, a stone is thrown up at 10 m/s relative to the balloon. Its velocity with respect to ground after 2 sec is - (assume g = 10 `m//s^(2)`)

A

zero

B

`5 ms ^(-1)`

C

`10 ms ^(-1)`

D

`20 ms ^(-1)`

Text Solution

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The correct Answer is:
B
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