Top: Kids and Teens: School Time: Science: Homework Help: Physics (3)
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How Things Work - Explains the mechanics of various topics, including inertia, force exertion, and gravity.

Crashwhite.com - Instant messenging, whiteboard, discussion board, sample problems, and e-mail support for physics.

The Physics Help Page - E-mail help in kinematics, Newton's laws, motion in two dimensions, momentum and collisions, work and energy, and circular motion with gravitation.