Answer
Please see the work below.
Work Step by Step
According to law of conservation of energy
$K+U=K_{\circ}+U_{\circ}$
$K+0.0=0.0+mg\Delta y$
$\implies K=mg\Delta y$
We know that
$v=\sqrt{\frac{2K}{m}}$
$\implies v=\sqrt{\frac{2(mg\Delta y)}{m}}$
$v=\sqrt{2g\Delta y}$
We plug in the known values to obtain:
$v=\sqrt{(2)(9.8)(25+38)}$
$v=35\frac{m}{s}$
