Q22: A landscape architect is planning an artificial water- fall in a city park. Water flowing at m/s will leave the end of a horizon- tal channel at the top of a vertical wall h = m high, and from there it will fall into a pool (Fig. P4.22).
(a) Will the space behind the waterfall be wide enough for a pedestrian walkway?
(b) To sell her plan to the city council, the architect wants to build a model to standard scale, which is one-twelfth actual size. How fast should the water flow in the channel in the model?