Conceptual Physics (12th Edition)

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

Chapter 35 - Think and Explain - Page 684-685: 76


The stick will appear to be 0.5 meters long.

Work Step by Step

It has momentum equal to 2 mv. Its speed must be 0.866c, so that $\gamma = 2$. This means that its length is contracted along its direction of motion by a factor of two.
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