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A bullet fired vertically up from the gr...

A bullet fired vertically up from the ground reaches a point in its path after 3s and 13 s, both times being taken from the instant of firing the bullet. The velocity of projection of the bullet is `(g=10 ms^(-2))`

A

`80ms^(-1)`

B

`40 ms^(-1)`

C

`160 ms^(-1)`

D

`20 ms^(-1)`

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The correct Answer is:
A
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