Use science inquiry to predict and investigate forces and motion to help rescue Ruff's plushie from the penguins' ice rink in this sports science game.

A video and a short quiz on Newton's Third Law of Motion. It breaks down what action and reaction mean, and how mass and acceleration factor into the outcome of a collision.

An animation that portrays the collision between a 3.0-kg loaded cart and a 2-kg dropped brick. It will be assumed that there are no net external forces acting upon the two objects involved in the collision. The only net force acting...

The animation portrays the collision between a 1.0-kg cart and a 2-kg dropped brick. It will be assumed that there are no net external forces acting upon the two objects involved in the collision. The only net force acting upon the two...

This lesson introduces the concept of average force.

[Free Registration/Login Required] Learn about and explore the relationship between force, time, impulse, and momentum in collisions.

This lesson explains why conservation of momentum can be applied to inelastic collisions.

This lesson explains why momentum is conserved for objects which strike one another at angles.

Through ten lessons and numerous activities, students explore the natural universal rules engineers and physicists use to understand how things move and stay still. Together, these rules are called "mechanics." The study of mechanics is...

By taking a look at the energy of motion all around us, students learn about the types of energy and their characteristics. They first learn about the two simplest forms of mechanical energy: kinetic and potential energy, as illustrated...

This Chem4Kids.com site explores the rate of reactions. Content focuses on forces that change the speed of reactions, and measuring rates.

Learn about sports science and force and motion alongside Ruff Ruffman.

An online course in particle physics with colorful images, charts and animations. Begin by learning about the Standard Model and the types of particles, particle families, and forces, then carry this knowledge over to your study and...

This site by the Illinois Institute of Technology gives a Lab activity in which students use a variety of toys to discover Newton's second law and momentum conservation. Newton's cradle, skate boards, and a toy motorcycle are incoporated...

This site, in German, offers numerous apps that illustrate common physics principles. Apps are organized into categories: mechanics, oscillations and waves, electrodynamics, optics, thermodynamics, the theory of relativity, physics of...

Explore sports science and see how many points can you score with your bottle caps in Ruff's take on table hockey.

This site provides a tour through the history of natives and immigrants to the California Gold Rush area, including African American, California Indian, Chinese, and Latino.