Conceptual Physics (12th Edition)

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

Chapter 3 - Think and Discuss: 79



Work Step by Step

Velocity and acceleration are not necessarily in the same direction. If a car moves north (call this the positive direction) and slows down, the acceleration will be negative, and be directed toward the south.
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