Question

Please help asaaaappppppppp

Answer 1

$v=\sqrt{64h}=\sqrt{64}\cdot\sqrt{h}=8\sqrt{h}$
$\text{substitute the value of h=84 ft.}\\\\v=8\sqrt{84}\approx8\cdot9.165\approx73.32$
$\boxed{Answer:\ B.\ 73.32\ ft/sec}$