This article on weight will help you prepare for the AP Physics test. Included are example problems to help you practice.

Dozens of statistical terms are defined and illustrated in this glossary.

Review the key concepts, equations, and skills for Newton's first law of motion, including the difference between mass and weight.

Balance the force of gravity with the force of the expanding gasses created by mixing baking soda and vinegar. Create a soda bottle submarine that sinks to the bottom of the bathtub and then rises back to the surface.