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A boy standing at the top of a 20-metre-...

A boy standing at the top of a 20-metre-high tower drops a stone. Assuming `g = 10 m//s^(2)` the velocity with which the 8 stone hits the ground is:

A

`10m//s`

B

`20 m//s`

C

`15m//s`

D

`25 m//s`

Text Solution

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The correct Answer is:
B
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