Consider water flow through a wide channel at a flow depth of \(2.5 \mathrm{~m}\). Now water flows through a sluice gate with a \(0.3-\mathrm{m}\)-high opening, and the freely discharged outflow subsequently undergoes a hydraulic jump. Disregarding any losses associated with the sluice gate itself, determine the flow depth and velocities before and after the jump, and the fraction of mechanical energy dissipated during the jump.