Answer to Question #24797 in Mechanics | Relativity for kathy
A 50g ball travelling at 25.0m/s is bounced off a brick wall and rebounds at 22.0m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.50ms, what is the magnitude of the average acceleration of the ball during this time interval?
The change that the velocityhas undergone dv = 22.0 m/s - (-25.0 m/s) = 47.0 m/s
It has taken place during time interval dt = 3.50 ms, so the average acceleration is