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Preliminary Work Variables The variables for this experiment are: -> Size of the ball> Mass of the ball> Surface Area of the ball> Pressure on the ball> Height the ball is dropped from> Temperature of the room> Temperature of the ball> Hardness of the ball> Material of the ball Prediction I am predicting that the higher that the ball is dropped from, the higher the ball will bounce back upwards, and this will be at a directly proportional rate. Background Knowledge The gravitational potential energy that the ball has before it is dropped is transferred into kinetic energy as the ball begins to fall. When the ball hits the floor, the kinetic energy is transferred into stored potential energy. The potential energy becomes kinetic energy as the ball starts to bounce back up. During the bouncing back up stage of the ball, energy is lost through heat and sound. The less the floor deforms and gives way,...

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