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A man throws a ball vertically upward an...

A man throws a ball vertically upward and it rises through 20 m and returns to his hands. What was the initial velocity (u) of the ball and for how much time (T) it remained in the air `[g = 10 m//s^(2)]`

A

`u = 10m//s, T = 2s`

B

`u = 10m//s, T = 4s`

C

`u = 20m//s, T = 2s`

D

`u = 20m//s, T = 4s`

Text Solution

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The correct Answer is:
D
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