1. We say that the moon "falls" around Earth. Does this mean that at any second the moon will crash into Earth? What is really meant by "falling around the Earth"?

2. Use an example (not from class) to describe the inverse square law (relationship between distance and intensity). In your example include the equation for the inverse square law.

3. Explain why (for a brief time) you will feel heavier in an elevator that is accelerating upwards, and lighter in an elevator that is accelerating downwards. Why does this feeling of being heavier or lighter only last a few moments?

4. Why will a ball that is launched horizontally from a table land at the same time as a ball that is dropped vertically from the same table? What is the name of the shape/path the horizontally launched ball follows as it moved towards the ground?

5. Make a sketch of a circular orbit around a planet, and make a sketch of an elliptical orbit around a planet.

-Describe or label on your sketches where (if anywhere) along the orbits the velocity, potential energy, and kinetic energy would be the greatest, and where (if anywhere) the velocity, potential energy, and kinetic energy would be the least.