a nasty little boy tries to drop a water balloon from the top of a 20 m tall building so it lands next to and splashes an innocent woman standing on the ground below. how long does the woman have to get out of the way?
physics - Steve, Wednesday, November 14, 2012 at 5:01pm
s = 1/2 at^2
20 = 4.9 t^2
t = 2.02 seconds