Conceptual Physics (12th Edition)

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

Chapter 7 - Think and Discuss: 114

Answer

The PE of a conventional car going downhill, while braking, shows up as heat in the brake pads. In a hybrid vehicle, the potential energy is transformed into electrical energy that is stored in the batteries. The stored PE can be used by the car later.
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