Conceptual Physics (12th Edition)

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

Chapter 35 - Think and Solve - Page 683: 38


Use the relativistic velocity formula.

Work Step by Step

$$v=\frac{v_{1}+v_{2}}{1+\frac{v_{1}v_{2}}{c^{2}}}$$ Substitute the numbers. $$v=\frac{0.80c+0.50c}{1+\frac{0.80c0.50c}{c^{2}}}=0.93c$$ Relative to the Earth, the drone moves at 93 percent of the speed of light.
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