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A projectile is projected with a speed u...

A projectile is projected with a speed `u` at an angle `theta` with the horizontal. What is the speed when its direction of motion makes an angle `theta//2` with the horizontal

A

`-mgu cos theta tan(theta//2)`

B

`-mgu tan theta cos (theta//2)`

C

`-2mgu tan theta sin(theta//2)`

D

`-2mgu sin theta tan(theta//2)`

Text Solution

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The correct Answer is:
A
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