College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 26 - Problems - Page 1011: 25

Answer

An observer on Earth would measure the speed of the light as $3.0\times 10^8~m/s$

Work Step by Step

Light in a vacuum moves at $3.0\times 10^8~m/s$ for all observers in all frames of reference. Therefore, an observer on Earth would measure the speed of the light as $3.0\times 10^8~m/s$.
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