Conceptual Physics (12th Edition)

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

Chapter 3 - Think and Explain: 77

Answer

This is a writing exercise for the student, and answers will vary. Here is a sample. Astra continually drives around a square track at constant speed. During what time intervals is her velocity constant? a. The entire time b. Only while she is moving along one of the 4 straight sides c. Only when she is turning a corner d. There is no time interval during which her velocity is constant The correct choice is B. Velocity is constant when an object moves at constant speed, and in a straight line.
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