physics
posted by Anonymous on .
A ball is kicked at ground level with a speed of 15.0 m/s at an angle of 35.0° to the horizontal. How much later does it hit the ground?

what is the vertical speed
15sin35.
how long is it in the air.
hf=hi+voi*t 1/2 g t^2
but hf=hi=0
heights are vertical
voi*t=1/2 g t^2
15sin35 t= 4.9t^2 solve for time t in the air. 
1.1 s