[填空题]
Suppose you adjust your gaelmc7g8 nhg),4cv.vp:gm**b k8rosz x *0h c brden hose nozzle for a / cuxi32xj j3(9d kinfhard stream of water. You point the nozzle vertically upward at a height of 1.5 m above the ground (Fig. 2–33). When you quickly move the nozzle away from the vertical, you hear the water striking the ground next to you for another 2.0 s. What is the water sp/ d92xukiin3 j3fc j(xeed as it leaves the nozzle? m/s
