Posted by Erika on Wednesday, November 14, 2012 at 4:59pm.
An arrow is shot at an angle such that it's horizontal velocity is 40 m/s and it's vertical velocity is 20 m/s. Find the horizontal distance the arrow will travel before hitting the ground

Physics  Damon, Wednesday, November 14, 2012 at 5:02pm
do vertical problem first to find time in the air which is twice the time going up
v = Vi  g t
0 at top = 20  9.8 t
t = 20/9.8
2 t = time in air = 40/9.8
Now how far horizontal at constant speed of 40?
40(40/9.8) = 1600/9.8
or about 160 meters