[填空题]
Suppose you adjust yo63t4ik64jkg3 rs6a+)4mrs fyviz u r dur garden hose nozzle for a hard stredpb(uc);z.0q3dmfw 6t 4 nky eam of water. You point t3;wcd) k n(uf4m6td 0 qybez.phe 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 speed as it leaves the nozzle? m/s
