Take the Over-the-Hill challenge using Internet Explorer. Try to push the ball so that it remains in the valley between the hill and the ramp.

1. Click the Play Game button to open the game.
2. Select the Energy Loss. The energy loss is how much energy the ball loses as it rolls along the track.
3. Click on ball with the mouse. Release the mouse button.
4. Move the ball by moving the mouse. The speed of the ball depends on how fast you move the mouse.
5. The ball is released when you move the ball off the pad.
6. After the ball comes to a stop, click the F5 button on your keyboard to reset.
7. Experiment at different energy levels. Which is most difficult? Which is easiest? Why?