please answer energy after collision and original speed

Energy/Momentum Ballistic Pendulum Mass of Ball: 103.09 Mass of Box: 4.272 kg Length of String: 136.0 cm Enter Answers Don't include units Energy After Collision (J): |:| Original Speed (m/s): |:| Click on the ball to fire it into the block. Use the maximum angle of displacement to find the speed of the ball a0 \\ N | i\\\\\\\\\\g\\\\\\\\\\\\s IJ\\U \\m\\\\ \\X_\\\\\\\\ Z