Find a smooth, hard surface in your house or outside (no carpet).
- Make a mark on the ground. Get a ball or marble, and predict how far it will roll if you gently push it from your mark.
- Gently push the ball or marble, making sure that it does not hit a wall or a piece of furniture.
- Measure the distance it rolls, beginning at the starting mark you made.
- How close was your prediction? Why did the ball stop? What happened to the kinetic energy in the rolling ball? Give as much detail as you can.
