Question

A ball's projected at an angle X to the horizontal from a cliff 96 metres high and strikes the ground at a distance of 260 metres away from the cliff.The time of its flight is 7 seconds.If it's assumed that air resistance's negligible,calculate: 1.the initial vertical velocity of the ball, 2.the time to reach the greatest height, 3.the initial horizontal velocity, 4.the angle X,and, 5.the velocity of the projectile on hitting the ground.

Answer 1

WHO IS THE SEARCE OF IN-ORGANIC CHEMISTRY