Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 2 - Describing Motion: Kinematics in One Dimension - Questions: 10

Answer

The ball’s speed is 120 km/hr when it returns, and the velocity is directed downward.

Work Step by Step

This is explained in Example 2-15. With no air resistance, it takes the same time for the ball’s velocity to change from 120 km/h to 0 (on the way up) as it does for its velocity to change from 0 to -120 km/h (on the way down).
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.