A ball is released moving straight up at 15. m/s. At some time later it is falling downward at 15. m/s. What was the magnitude of its average velocity over this time period?
A) 30. m/s
B) 22. m/s
C) 0. m/s
D) 7.5 m/s
E) 15. m/s

Question

Quizplus · Accepted Answer

The average velocity is calculated as the total displacement divided by the total time. Since the ball returns to its starting point, the total displacement is 0, making the average velocity 0 m/s.

A Ball Is Released Moving Straight Up at 15