Answer
F = $(80 kg) \frac{(3 m/s)^{2}}{2 m} = 360 N$.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 8 - Plug and Chug - Page 155: 41
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