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A particle is projected from the ground ...

A particle is projected from the ground at an angle `30^@` with the horizontal with an initial speed `20 m s^-1`. After how much time will the velocity vector of projectile be perpendicular to the initial velocity ? [in second].

A

`u sin theta`

B

`u cot theta`

C

`u tan theta`

D

`u cos theta`

Text Solution

Verified by Experts

The correct Answer is:
B
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