A ball is projected from the ground with velocity `u` such that its range is maximum Then

A ball A is projected from the ground such that its horizontal range is maximum. Another ball B is dropped from a height equal to the maximum range of A. The ratio of the time of flight of A to the time of fall of B is

From a point on the ground a particle is projected with initial velocity u ,such that its horizontal range is maximum. The magnitude of average velocity during its ascent.