Essential University Physics: Volume 1 (4th Edition) Clone

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 8 - Exercises and Problems - Page 149: 77

Answer

d.

Work Step by Step

We know that 500 meters per second and 9.81 meters per second are not even faster than an airplane, so we can eliminate these right off the bat. 1.7 kilometers per second sounds more enticing, but it is still too slow to get into orbit. Meanwhile, 12 kilometers per second is beyond the escape speed of earth, so this is not the correct answer. (If a satellite went this speed, it would never come back.) Thus, we see that d, 4 kilometers per second, is the correct answer.
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