Question

A ball is kicked at ground level with an initial velocity of 18 m/s m the horizontal direction and 11 m/s in the vertical direction. At what speed doer the hall hit the pound in m/s? For how long does the ball remain in the air in seconds? What maximum height is attained by the ball in meters?

Answer 1

Part a speed of ball when hit the ground is v = squareroot v^2_o x + v^2_o y = squareroot (18)^2 + (11)^2 = 21.095 m/s Part b Time of Flight is T = 2 v_o y/g = 2 times 11/9.8 = 2.25 sec Part c Maximum Height attained by ball H = (v_o y)^2/2 g = (110^2/2 times 9.8 = 6.17 m