Answer
A long time.
Work Step by Step
Less force is necessary to stop the incoming object if its momentum is decreased over a long time.
This is discussed on page 94.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 6 - Reading Check Questions (Comprehension) - Page 103-104: 7
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