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a) mass of weight = 65Kg S = 10 m v2 = u2 + 2aS v= final velocity =? u= initial velocity =0m/s a=acceleration =g=9.8m/s2 S= distance travelled =10m v2 = 02+2x9.8x10 v=14m/s b) force exerted by water F=ma              ............./ m=mass=65kg          ... See the full answer