A football is kicked at ground level with a speed of 18.0 m/s at an angle of 35.0 degrees to the horizontal. How much later does it hit the ground?

V o = 18 m/s,

v o y = v o * sin 35° = 18 * 0.5736 = 10.32437 m/s

y = v o y· t - 1/2 g t²

0 m = 10.32437 m/s t - 1/2 · 9.81 m/s² · t² / : t

4.905 t = 10.32437

t = 10.32437 : 4.905

t = 2.1 s

Answer:

A ball will hit the ground after 2.1 seconds.