University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 13 - Gravitation - Problems - Discussion Questions - Page 424: Q13.14

Answer

It is correct.

Work Step by Step

The parabolic description of the path would be exact if the Earth were flat and the acceleration were constant, which is an approximation that generally holds true for projectiles. However, strictly speaking, according to Kepler’s first law, the projectile is orbiting the Earth in an elliptical orbit. It is an ellipse where the major axis is much larger than the minor axis, and a small arc of it is very close to a parabola.
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