Conceptual Physics (12th Edition)

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

Chapter 4 - Think and Discuss: 119


Right after you let the balls go, the speeds are low, and air drag is small compared to the weights. The situation is very similar to free fall and the accelerations will be very nearly equal. From a greater height, there is time for speed to increase, the air resistance builds up, and it becomes more noticeable.
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