23P1Q03

3 A

$\displaystyle KE=\frac{{{p}^{2}}}{2m}$

So arrow arrives with momentum of $\displaystyle \sqrt{2mE}$

Impulse-momentum theorem: $\displaystyle \begin{aligned} & (F\Delta t=\Delta p) \\ & Ft=\sqrt{2mE} \end{aligned}$

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