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 0.02 m2 and the density of water is taken as 1000 kg/m3, then the force developed on the plate is
1
10 N
2
100 N
3
1000 N
4
2000 N