Conceptual Physics (12th Edition)

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

Chapter 2 - Think and Discuss: 88


The stone will not land behind the mast.

Work Step by Step

Let's ignore air resistance. If the stone is dropped from the top of a tall mast of a moving ship, its horizontal motion is not changed; it has the same horizontal speed that the ship has. From the viewpoint of someone on the moving ship, the stone falls in a vertical, straight line, landing exactly at the base of the mast. Please see Figure 2.19 on page 34 for a similar example of a coin tossed upward in an airplane.
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