1. (a) (i) One ball was dropped from rest at the same time another ball was projected horizontally at the same height, which ball will reach the ground first? Explain mathematically (ii) The velocity at the maximum height of a projectile is half its initial velocity projection U. What is the range of the projectile? (b) The stone is projected from the ground level with a velocity of 25m/s. 2 seconds I just clear a wall at Sm height. Find (1) The angle of projection of a stone. (1) The greatest height reached.​