Conceptual Physics (12th Edition)

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

Chapter 16 - Think and Explain: 63

Answer

Both the molecule and the baseball are in free fall, and like any other object in free fall, accelerate downward at g. Under normal conditions, each object collides with air molecules on the way down. These collisions affect the single molecule spectacularly, but have much less effect on the baseball.
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