A landscape architect is planning an artificial waterfall in a city park. Water flowing at 1.70 m/s will leave the end of a horizontal channel at the top of a vertical wall h = 2.65 m high, and from there the water falls into a pool (see figure).
A landscape architect is planning an artificial waterfall in a city park. Water flowing at 1.70...
question 22 and 25 25. A playground is on the flat roof of a city school, 6.00 m above the street below (Fig. P.25). The vertical wall of the building is h = 7.00 m high, forming a l-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launch ing it at an angle of = 58.0° above the horizontal at a point d=24.0m from the base of the building wall....