Author Question: A 50.0-g ball traveling at 22.0 m/s is bounced off a brick wall and rebounds at 21.0 m/s. A ... (Read 229 times)

Cooldude101 · **on:** Jul 28, 2018

A 50.0-g ball traveling at 22.0 m/s is bounced off a brick wall and rebounds at 21.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 2.50 ms, what is the average acceleration of the ball during this time interval?
a. 1.72E+4 m/s2
b. 3.44E+4 m/s2
c. 8.60E+3 m/s2
d. 1.72E+1 m/s2
e. 4.30E+1 m/s2

Question 2

The value of an object's acceleration may be characterized in equivalent words by which of the following?
a. displacement
b. rate of change of displacement
c. velocity
d. rate of change of velocity