This lesson introduces the concept a systems and explains why it is important to properly define a system. It is 2 of 2 in the series titled "Introduction to a System."

This site from NASA compares free falling motion to falling with air resistance. Discusses Galileo's experiment. Explains why we believe all objects free fall with the same acceleration.

Match stick rockets makes a great demonstrations to show students Newton's third law. By covering a match with tin foil, students can see the reaction thrust as the molecules escaping the matchstick are propelled into the air. Lesson...

Review momentum and collisions with this collection of video lectures from East Los Angeles College. Lectures vary in length and explain the concepts with examples.

This lesson explains why mass and acceleration are inversely proportional. It is 1 of 2 in the series titled "Mass & Acceleration."

This lesson demonstrates how to draw free-body diagrams for objects at rest or sliding on an inclined plane. It is 2 of 2 in the series titled "Representing Forces on an Inclined Plane."

A short interactive activity to show the movement of a projectile. You can change the values of the initial height, velocity, angle of inclination, the mass and the gravitational acceleration.

What is force? Illustrated discussion of how force is calculated and three familiar types.

This lesson introduces the concept of action and reaction forces and explains how they can be observed. It is 1 of 2 in the series titled "Interaction Between Objects."

This lesson introduces the concept of the free-body diagram. It is 2 of 2 in the series titled "Free-Body Diagram."

Words and equations are used to explain the relationship between angular acceleration and the torque exerted upon an object. Well-written; great graphics.

[Free Registration/Login may be required to access all resource tools.] The following tutorial helps students to understand how to apply Newton's Second Law under equilibrium conditions in two dimensions.

Students must predict the distance a box will move up an incline based on energy conservation. There will be friction present and some of the original KE will turn into heat.

Students must predict the distance traveled by a person on a sled. The person will start with potential energy due to gravity and then lose some energy on a hill. They will then lose the remaining energy on a level surface. You have to...

[Free Registration/Login may be required to access all resource tools.] Featurea the definition of combining forces: Pulling down and pushing up, forces acting in opposite directions, forces acting in the same direction.

Students learn the relationship between the electric and magnetic fields. Specifically, they verify that a magnetic field is created in a current carrying coil of wire and a changing magnetic field can induce a current in another coil of...

In this interactive physics tutorial, students will take a more qualitative approach to some collision problems. The questions provide a real test of conceptual understanding of momentum conservation in collisions.

[Free Registration/Login Required] Learn about projectile motion and its relevance to the shape of a stream of water.

[Free Registration/Login Required] Practice with the concepts of conservation of momentum and energy by analyzing a special case of the ballistic pendulum.

Is it scientifically possible to fly? In this series, creator Joy Lin tackles six superpowers and reveals just how scientifically realistic they can be to us mere mortals. [5:11]

Students learn about the Newtonian mechanics principle of conservation of angular momentum and the application in the quantum mechanical world.

[Free Registration/Login may be required to access all resource tools.] How to draw a velocity-time graph and what it represents.

Students explore different situations where two side-by-side carts on a low-friction track push away from each other and travel in opposite directions. The goal is to investigate the effects on the relative mass.

How old would you be on Mars? Venus? Have fun plugging in your birthdate to see your age on other planets then read scroll down for a full explanation.