Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 9 - Exercises and Problems - Page 165: 67



Work Step by Step

We know that the two initial objects have same mass and speed and that they collide to have half of the speed, meaning that they both have the same angle between each other. Thus, we must find this angle and multiply by two. Using conservation of momentum, we find: $cos \theta = \frac{1}{2}\\ \theta = 60^{\circ}$ This means that the overall angle is: $60^{\circ} \times 2 = 120^{\circ}$
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.