Problem 5. A fireman who is a horizontal distance of R = 50 m away from a building directs a stream of water from a fire hose at an angle

of 0 = 30° above the horizontal. The water leaves the hose at a speed of vo = 40 m/s. (a) At what height H does the water strike the building? (b) Is the water rising or falling when it strikes the building? (c) At what time has the speed of the water been reduced to 36 m/s?