A stone is thrown with a velocity V making an angle `theta` with the horizontal. The horizontal distance covered by it, before it falls to the ground, is maximum when `theta` is equal to:

A stone is thrown up with a velocity u' whiwhich makes an angle theta with the horizontal.

When a body is thrown with a velocity u making an angle theta with the horizontal plane, the maximum distance covered by it in horizontal direction is

A stone is thrown with a velocity v at an angle theta with the horizontal.Its speed when it makes an angle beta with the horizontal is

A ball is projected with initial velocity u at an angle theta to the horizontal. Then horizontal displacement covered by ball as it collides third time to the ground would be, if coefficient of restitution is e :