Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 3 - For Thought and Discussion: 12

Answer

The answer is below.

Work Step by Step

This is simply an approximation, not a statement regarding the entire earth. After all, while the earth is round overall, its curvature over a small distance is fairly minimal. Thus, it is fair to assume the earth is flat for the purposes of this class, for the earth's curvature is negligible except in advanced applications over long distances.
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