Click to see additional instructions An adult and child are both on ice-skates on an ice-rink. The adult, with a mass m = 60 kg, is carrying a ball of mass mB = 0.15 kg. The adult is sliding with a speed of 1.0 m/s towards the stationary child, who has mass mc = 30 kg. Before reaching the child, the adult throws the ball toward the child so that the ball has a speed of 30 m/s. The child catches and holds onto the ball. [Ignore any change in speed or trajectory of the ball as it travels and friction between the skates and the ice.] a. Determine the speed and direction of the adult's motion after throwing the ball. b. Determine the speed of the child after catching the ball. m/s m/s