A ball is thrown up in the sky. After reaching a height, the ball falls back. What can be said about the average velocity?
A. It is non zero
B. It is zero
C. It is greater than zero
D. It is less than zero
Answer:B
A ball is thrown up in the sky. After reaching a height, the ball falls back. What can be said about the average velocity?
A. It is non zero B. It is zero C. It is greater than zero D. It is less than zero