2c(1,35.0) :(2a)(2b)(2c), 5. (35.0) A wide rectangular channel with constant cross-section has a bed slope of 1: 120. At a particular section the Manning's roughness coefficient increases from 0.01 (upstream) to 0.042. (downstream). The discharge per unit width in the channel is 7.2m3/s/m and the flow far upstream is uniform.< The following equations are provided for reference.< 1 = ng K So 3/5 do = 2 3 4 2 1-(+ M + Ay/2 217 0217 8 5 d)Assume that the water depth before hydraulic jump is y and the water depth after it is. y2, show that y = y (1 + 8F1), where F-1 = V/gy with V andg being. "1 the velocity before hydraulic jump and the gravitational acceleration, respectively.< J217