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A particle is projected at an angle of t...

A particle is projected at an angle of `theta` with the horizontal, with initial speed `u`.If the magnitude of velocity of projectile motion and time are related as `v^(2)-100t^(2)+400t-800=0`. Then which of the following is/are correct. (Take `g=10m//s^(2)`)

A

Angle of projection is `45^(@)`

B

Maximum height attained by the particle is `20` meter

C

Range of the particle is 80 meter

D

Projection velocity is 40 m/sec

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The correct Answer is:
A, B, C
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