math
posted by Nancy .
A golf ball is hit off the ground at an angle of pie/6 and it travels 400 ft. How long was the golf ball in the air?

vertical velocity= V*sin PI/6= V/2
Horizontal velocity= V cosPI/6=V*.866
check that.
distance= 400=V*(.866)time
vertical distance=0=V/2*time16time^
time= V/32
put that into the first equation (V=32t)
400=.866*32t*t solve for t 
thanks
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