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A ball is dropped from a height h above ...

A ball is dropped from a height h above ground. Neglect the air resistance, its velocity (v) varies with its height (y) above the ground as :-

A

`sqrt(2g(h-y))`

B

`sqrt(2gh)`

C

`sqrt(2gy)`

D

`sqrt(2g(h+y)`

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The correct Answer is:
A
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