Conceptual Physics (12th Edition)

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

Chapter 6 - Think and Explain - Page 106-107: 81


The direction of momentum is to the left.

Work Step by Step

Calculate the system momentum. Let positive velocities be toward the right, and negative velocities be toward the left. $(0.5 kg)(1 m/s) + (0.8 kg)(-1.2 m/s) = -0.46 kg m/s$ The negative sign shows that the momentum is toward the left.
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