Description, diagrams and equations for gravitational energy. Includes example and energy of an orbiting satellite.
Spark Notes

Moments of inertia for various bodies
http://en.wikipedia.org/wiki/List_of_moments_of_inertia

Hundreds of free games illustrating basic principles of physics.
PhysicsGames.net

In this video, Dr. Radi AlJishi provides an introduction to the basic math used in physics.
Educator.com

This site lets users see the relationships between kinetic energy, potential energy, friction, and gravity as they design a roller coaster.
Roller Coaster Simulation

This website provides not only an explanation of how the ballistic pendulum can be used to measure the speed of a bullet but also a calculator to check your work. It can be used to explain a similar assembly involving a spring instead of a pendulum as well. You simply substitute the equation for the potential energy of a spring for (M+m)gd  the potential energy of the pendulum.
Hyperphysics


Need to study for Physics? Here are some questions to help you out!!!
StudyStack

A list of equations and constants for AP Physics B and C exams, organized by subject.
PhysicsLAB

This describes (with equations and diagrams) the workenergy principle, and how it applies to rotation, including the important conditions for rolling without slipping.
HyperPhysics
