Conceptual Physics (12th Edition)

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

Chapter 2 - Think and Discuss - Page 38: 82

Answer

It will continue at half speed, then slow due to friction.

Work Step by Step

The car has no "memory" of its past speed (we'll assume the cruise control is off), and therefore has no tendency to speed up. Instead, as explained by Newton’s first law, it would continue at that half speed, and then slow down due to friction. This is discussed on page 26.
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