posted by Grant .
A 54.0-g Super Ball traveling at 29.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 4.00 ms, what is the magnitude of the average acceleration of the ball during this time interval in m/s^2? Please show work
Vo = 29 m/s.
V = -18 m/s.(opposite direction of Vo).
t = 4 mS = 0.004 s.
a = (V-Vo)/t = (-18-29)/0.004=-11,750 m/s^2.