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A particle is projected from the ground ...

A particle is projected from the ground with an initial speed of v at an angle `theta` with horizontal. The average velocity of the particle between its point of projection and highest point of trajectroy is :

A

`v/2sqrt(1+2cos^2theta`

B

`v/2sqrt(1+cos^2theta`

C

`v/2sqrt(1+3cos^2theta`

D

`vcostheta`

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