Problem $3(20$pts$)$ A hydraulic jump occurs in a $15-$ft$-$wide rectangular, concrete channel. The initial depth comes from a spillway discharge of $100f\frac{t^3}{s}$ with a slope of $12\%.$ The sequent depth is $3\mathrm{.}00ft.$ Determine the energy loss $(10\text{'})$ and the specific force per unit width of channel $(10\text{'}).$