A cylindrical water $)=(4ft$ whose top is open to the atmosphere is initially filled with water. Now the$-$discharge plugnear the bottom of the tank is pulled out, and a water jet with $D_{\text{j}\text{e}\text{l}}(2-$inch$)$ streams out. The average velocity of the jet is approximated as $V=\sqrt[\phantom{2}]{2gh},$ where h is the height of water in the tank measured from the center of the hole $($a variable$)$ and g is the gravitational acceleration.

Determine how long it takes for the water level in the tank to drop to $1$ ft from the bottom $)=(3ft.[20$ points$]$

Nice try, but curong initlea$/$A $(t5)$

$v=\sqrt[\phantom{2}]{2gh}$

$v=\sqrt[\phantom{2}]{2\mathrm{.}9}$