Use qualitative LOL diagrams and bar graphs to analyze the energy changes in each situation given. Carefully label the graphs and pictures to correspond with the positions of the objects given.

1. A ball is held above the ground and then is dropped so it falls straight down. The last frame is for the instant right before the ball hits the ground.

1. A spring in a wind-up toy is compressed and released, causing the toy to "walk" across the floor before it comes to a stop. Diagram the three moments below that occur after the toy has been wound up and released.

1. A baseball is thrown up in the air and then falls back down. Draw an LOL diagram for each of the ball's 5 locations. Explain the difference between the bar graphs for location 2 and location 4.

1. A ball rolls to a stop on the floor.

1. A rubber, stretchy bouncy ball is dropped from rest at Position A. Throughout the next four time intervals (B - E), the ball hits the ground, stretches, and bounces to heights that continue to decrease. Draw an LOL diagram for the ball as it travels through the five moments shown below.

1. A rock rests on a compressed spring and is then launched upwards to a maximum height.

1. A truck is driven at a constant velocity down the street, releasing heat from its engine.

1. What would be the difference if the ball in problem 4 were on a table instead of the floor? Why does the ball not bounce as high each time in problem 5?

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