At the entrance to a water channel, the velocity is uniform with a velocity V. Further downstream the velocity profile is given by the function u =Ay-By where u has

units of ft/sec and y has units of fl. The constants A and Band other channel dimensions are given in the table below. Inlet velocity V 2 ft/sec Downstream water height I.5 ft Constant channel width (into the paper) W 6ft Constant A in downstream velocity profile 1.5 sec Constant B in downstream velocity profile 0,5 ft'sec