A jet of water with cross section of 6 square centimeter strikes a wall at an angle of 60 deg. to the normal rebounds elastically from the wall without losing energy. If the velocity of the water in water in the jet is 12m/s, the force acting on the wall is
(a)0.864 N (b)86.4 N (c)72 N (d) 7.2 N
Comments
Leave a comment