Answer
$50$ ft-lb
Work Step by Step
$W=\dfrac{1}{2}mv^2$
Here, we have $m=\dfrac{1}{8} lb=\dfrac{1}{256}~lb$ and $v=160 ft/s$
Plug in the values:
$W=(\dfrac{1}{2})(\dfrac{1}{256})(160)^2=50$ ft-lb
University Calculus: Early Transcendentals (3rd Edition)
by Hass, Joel R.; Weir, Maurice D.; Thomas Jr., George B.
Published by
Pearson
ISBN 10:
0321999584
ISBN 13:
978-0-32199-958-0
Chapter 6 - Section 6.5 - Work - Exercises - Page 381: 24
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