Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 6 - Think and Discuss: 99

Answer

The first friend is correct.

Work Step by Step

Let the system consist of both balls. Suppose the golf ball heads to the right initially, with positive momentum of +1 unit. After the collision, the golf ball rebounds to the left at almost the same speed. Because of its negative velocity, it will have a negative momentum of about -1 unit. System momentum is conserved, so afterward, the bowling ball must have a positive momentum of +2 units so that the final momentum is 2 + (-1) = 1 unit, as before. Note that the bowling ball will not be moving very quickly because its mass allows it to have 2 units of momentum while moving much more slowly than a golf ball.
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.