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A gun mounted on the top of a moving tru...

A gun mounted on the top of a moving truck t is aimed in the backward direction at an angle of 30° to the vertical. If the muzzle velocity of the bullet is `4 ms^(-1)` the value of speed of the truck that will make the bullet come of out vertically is

A

`1 ms^(-1)`

B

`(sqrt3)/(2) "" ms^(-1)`

C

`0.5 ms^(-1)`

D

`2 ms^(-1)`

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Verified by Experts

The correct Answer is:
D
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