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1. |
A jet of water issues from a nozzle with a velocity of 20 m/s and it impinges normally on a flat plate moving away from it at 10 m/s. If the cross-sectional area of the jet is 0.01 m2 and the density of water is taken as 1000 kg/m3, then the force developed on the plate will be |
A. | 100 N |
B. | 200 N |
C. | 1000 N |
D. | 2000 N |
Answer» D. 2000 N | |