3. You have two identical mass and size bouncy balls that behave very differently. When you drop the so-called "sad" ball it thuds on the floor and does not bounce at all. When you drop the so-called happy ball from the same height, it bounces back to almost the same height from which it was dropped. you raise and Next, you hang each ball from a string and place a wood board lightly touching the ball. When release each ball from the same height, you see that their motions are exactly the same, each moving at the same speed with respect to the ground at each moment. Use conservation of momentum to predict which ball is more likely to cause the plank to fall over. Include sketches, bar charts, force diagrams, motions diagrams, and equations in your prediction.