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A body is thrown vertically upward from ...

A body is thrown vertically upward from a point `A` 125 m above the ground. It goes up to a maximum height of 250 m above the ground and passes through `A` on its downward journey. The velocity of the body when it is at a height of 70 m above the ground is `(g=10 m//s^(2))`

A

`50 ms^(-1)`

B

`60 ms^(-1)`

C

`80 ms^(-1)`

D

`20 ms^(-1)`

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The correct Answer is:
B
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