A landscape architect is planing an artificial water fall. Water flowing at 1.11 m/s will leave the end of a horizontal channel at the top of a vertical wall h=4.00 m high. Will the space behind the waterfall be wide enough for a pedistrian walkway? To sell her plan to the city council, the architect wants to build a model to scale which is 1/14 actual size. How fast should the water flow in the channel in the model?

Question

A landscape architect is planing an artificial water fall.  Water flowing at 1.11 m/s will leave the end of a horizontal channel at the top of a vertical wall h=4.00 m high.  Will the space behind the waterfall be wide enough for a pedistrian walkway?  To sell her plan to the city council, the architect wants to build a model to scale which is 1/14 actual size.  How fast should the water flow in the channel in the model?