AP Physics C - Gravitation
The connection between an apple falling to the surface of the earth and the moon "falling" in its orbit around the earth is so tenuous, only a man of Newton's genius could have stumbled upon it.
Gravitation Video Lessons
- The Law of Falling Bodies (Mechanical Universe, Episode 2)
- The Apple and the Moon (Mechanical Universe, Episode 8)
- Kepler's Three Laws (Mechanical Universe, Episode 21)
- The Kepler Problem (Mechanical Universe, Episode 22)
- Energy and Eccentricity (Mechanical Universe, Episode 23)
Multiple-Choice Practice Problems
Scroll down to see multiple choice practice problems in Universal Gravitation.



