Choose the correct alternative (s)

Options

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 motioin whose range `R` is `n` times the maximum height `H` is `tan^(-1)(4//n)`
C. The time of flight `T` and the horizontal 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 he 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`

Answer

A, B, C, D