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A particle is projected from the ground ...

A particle is projected from the ground with velocity u making an angle `theta ` with the horizontal. At half of its maximum heights,

A

its horizontal velocity is `u cos theta `

B

its vertical velocity is `(u sin theta)/(sqrt2)`

C

its velocity is `u((1+ cos^2 theta)/(2))^(1/2)`

D

all the above are true

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The correct Answer is:
D
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AAKASH SERIES-RIVISION EXERCISE-MOTION IN A PLANE (OBLIQUE PROJECTION)
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  19. Two seconds after projection, a projectile is moving at 30^@ above th...

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  20. A stone is projected from the top of a tower with velocity 20ms^(-1) ...

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