Conceptual Physics (12th Edition)

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

Chapter 4 - Think and Explain - Page 71-72: 76

Answer

Toward the front of the car.

Work Step by Step

This is discussed on pages 43-44. When an object slows down, the acceleration is opposite to the velocity. The car is moving backward, so the acceleration is directed toward the front of the car.
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