Answer
$85.1$ ft-lb
Work Step by Step
$W=\dfrac{1}{2}mv^2$
Here, we have $m=5 oz=\dfrac{0.3125~lb}{32~ft/s^2} =\dfrac{5}{512} slugs$ and $v=132~ft/s$
Plug in the values:
$W=(\dfrac{1}{2})(\dfrac{5}{512})(132)^2=85.1$ ft-lb
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