Conceptual Physics (12th Edition)

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

Chapter 9 - Think and Explain: 62

Answer

A person feels weightless when the only force acting is gravity, i.e., there is no support force. A person falling at terminal velocity is like the person in Figure 9.9 who is descending at constant velocity. Two forces act on the person; air resistance plays the role of the support force. The person does not feel weightless.
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