2. A rubber ball (m1 = 0.0500 kg) hangs at the end of a 0.500 m pendulum string. The ball is held to the side at an angle of 10.0°, as shown in the diagram. When the ball is released from rest, it swings down to hit a larger rubber ball (m2=0.0800 kg) sitting on a frictionless surface. The two balls collide elastically. Determine the speed of the second ball after the collision.
