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Choose the correct alternative

A

if the greatest height to which a man can throw a stone is h, then the greatest horizontal distance upto which he can throw the stone is 2h

B

the angle of projection for a projectile motion, whose range R is n times the maximum height H, is `tan^(-1) (4//n)`

C

the time of flight T and the horiaontal range R of a projectile are connected by the equation `gT^(2)=2R tan theta` where, `theta` is the angle of projection

D

A ball is thrown vertically up. Another ball is thrown at an angle `theta` with the vertical. Both of them remain in air for the same period of time. Then the ratio of heights attained by the two balls is `1 : 1`

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