39 A ball of mass m strikes a rigid wall with speed u at an

Last updated: 6/8/2023

39 A ball of mass m strikes a rigid wall with speed u at an angle of 30 and get reflected with the same speed and at the same angle as shown in the figure If the ball is in contact with the wall for time t then the force acting on the wall is musin 30 a 1 mucos 30 b 2mu sin 30 t 2mucos 30