Answer
The "geosynchronous" communication satellites actually are moving very quickly. Their period is 24 hours, just like the rotation of the Earth, and thus they appear to hover above a fixed point on Earth.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 10 - Think and Explain - Page 203-205: 76
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