Answer
$98.35$ ft-lb
Work Step by Step
$W=\dfrac{1}{2}mv^2$
Here, we have $m=\dfrac{0.125~lb}{32~ft/s^2} =\dfrac{1}{256}~slugs$
and $v=224.4~ft/s$
Plug in the values.
$W=(\dfrac{1}{2})(\dfrac{1}{256})(224.4)^2=98.35$ ft-lb
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.