A steel ball of mass m1 = 0.400 kg is fastened to a cord that is 1.60 m long and fixed at the far end. The ball is then released when the cord is horizontal . At the bottom of its path, the ball strikes a steel cube of mass m2 = 1.60 kg that is initially at rest. The collision is elastic. (A) Calculate the velocity (magnitude and direction) of the ball just before it collides into the cube.

(B) Calculate the tension in the string just before the steel ball collides into the cube. A free body diagram is required for full credit. (C) Write down the equation(s) needed to determine the final velocities of the ball and the cube after the elastic collision. Your equations should have the final velocities of the ball and the cube as unknowns. (D) The velocity of the cube after the collision is 2.24 m/s to the right. Calculate the velocity (magnitude and direction) of the steel ball after the collision. (E) The collision lasts 5.00 10-2 s. What is the average force (magnitude and direction) that the cube exerts on the steel ball during the collision?