A ball is hit horizontally at a height of 1.2 m and travels a horizontal distance of 5.0 m before reaching the ground. The ball is at rest when hit. Calculate the initial horizontal velocity given to the ball when it was hit.
Vertically: u=0 ms-1 s=1.2 m a=9.8 ms-2
s=ut + 0.5at2
Therefore t = 0.49s
Horizontally: t=0.49s s=5.0m
speed = distance/time = 5.0/0.49 = 10.2 ms-1
