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When a particle is projected from the surface of earth its mechanical energy and angular momentum about center of earth at all time are constant.
Q. A particle of mass `m` is projected from the surface of earth with velocity `v_(0)` at angle `theta` with horizontal suppose `h` be the maximum height of particle from surface of earth and v its speed at that point then v is `v_(0)costheta`

A

`v_(0) cos theta`

B

`gt v_(0) cos theta`

C

`lt v_(0) cos theta`

D

zero

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The correct Answer is:
C
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