In this guided inquiry demonstration, a person on rollerblades and a medicine ball are used to teach the concept of conservation of momentum. Various sorts of collisions are used to show how momentum is conserved within a system.

Students analyze a collision between a moving cart and a dropped brick that lands on top of it. They use position-time data to determine the pre- and post-collision speeds of the cart and the brick. The individual momentum values of the...

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.

A virtual collision track with colliding or exploding carts allows students to explore elastic and inelastic collisions. They can vary the mass of the two carts and their pre-collision velocities. An accompanying activity sheet which...

A virtual collision track with colliding or exploding carts allows students to explore elastic and inelastic collisions. They can vary the mass and velocities of the two carts. An accompanying activity sheet which focuses on elastic...

The Illinois Institute of Technology provides this site. The site contains a graphing activity which illustrates that a constant force exerted upon an object results in constant acceleration. Rolling carts and stopwatches are used to...

Background information on vectors and their use in describing motion in two dimensions. A comparison of Aristotle's and Galileo's perspectives on force and motion is given.

A question and answer format is used to relate elastic potential energy to the bounce of a rubber ball. Explanation of this simple phenomenon is thorough, complete, and free of trite statements.

[Free Registration/Login Required] Learn about centripetal motion in the context of a bobsled on a track. Adjust variables to test how many ways the bobsled can stay on the track in a race with the simulation. Examine potential problems...

A Java-based simulation where students can observe what happens to a free-falling object, with and without air resistance. Controls allow the user to adjust settings and the results are graphed as the simulation progresses.

Use this simulation to see the results of applying a force to move an object. Analyze forces and friction using graphs.

HyperPhysics site with dealing with the mathematics of rocket flight. The site is interactive and allows the user to input data. This is a rather high level site and, while any student could use it to get answers, to understand some of...

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

In this activity, students investigate why an egg does not break when thrown at a hanging sheet, but does when thrown at a wall. They will learn about momentum, and its applications.

A video and a short quiz on acceleration.

[Free Registration/Login Required] Understand the concept of rotational inertia [moment of inertia) by analyzing the motion of a circus tightrope walker using this interactive simulation. A PDF worksheet and a video tutorial are also...

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

This lesson provides the learner with example problems using Newton's second law of motion, when accounting for air resistance. It is 1 of 2 in the series titled "Practice w/ Air Resistance."

This site has a discussion of a college physics project in which the motion of an object under the influence of air resistance was modeled and studied. Procedure and modeling software are described and the results and the findings are...

A handy resource that gives an overview of equations and definitions pertinent to an introductory, college-level physics course, with two of its three sections focusing on motion-related topics and principles.

Through illustrated examples and practice problems, students explore the centripetal force requirement. So for an object moving in a circle, there must be an inward force acting upon it in order to cause its inward acceleration.

Students improve their understanding of momentum conservation and learn that a recoiling object in an elastic collision will transfer more impulse than if it collided inelastically.

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...

Wikipedia's site on centripetal force provides a section explaining the difference between centripetal force and centrifugal force. Includes formulas and hyperlinked terms.