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A body is thrown horizontally from the t...

A body is thrown horizontally from the top of a tower.It reaches the ground after `4s` at an angle `45^(@)` to the ground.The velocity of projection is

A

`9.8" ms"^(-1)`

B

`19.6" ms"^(-1)`

C

`29.4" ms"^(-1)`

D

`39.2" ms"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Tan alpha =("gt")/(u)`
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