physics
posted by amy .
a soccer player kicks a ball into the air at an angle of 36.0 above the horizontal. the initial velocity of the ball is +30.0m/s. how long is the soccer ball in the air?

in the vertical:
hf=hi+viv*t1/2 g t^2
0=0+30sin36*t4.9t^2
t(30sin364.9t)=0
t=0 and t= 30sin36/4.9