Conceptual Physics (12th Edition)

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

Chapter 6 - Reading Check Questions (Comprehension): 17


Car B will have the same speed of Car A before the collision.

Work Step by Step

The momentum before is $mv + 0$. After the collision, since car A is at rest, it has zero momentum. Momentum is conserved; therefore car B has momentum mv, and the momentum afterward is $0 + mv$. This is discussed on page 97 and shown in Figure 6.13a.
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