Lots of people enjoy roller coasters, but not many understand why they feel the strange excitement they do when riding them. In this science fair project, you will build and use an accelerometer to figure out and measure gravity-induced...

Physiclips thoroughly presents mechanics concepts with animations and film clips.

This lesson introduces the concept of gravity. It is 1 of 2 in the series titled "Introduction to Gravity & Acceleration."

Try this at-home science experiment to learn about acceleration due to gravity.

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.

This site from NASA uses a colorful graphic to illustrate why objects reach terminal velocity. Provides equation for the terminal velocity of an object. Graphic is accompanied by a simple explanation.

Find the maximum height and the time to reach the maximum height for a firework that is fired vertically upward and explodes at the point where it would have started coming back down again. Information about the planet will be given to...

Find the explosion height and the time to explosion for a firework that is fired vertically upward and explodes at the point where it already coming back down again. Information about the planet will be given to them so that they can...

This article announces the discovery of the top quark and its significance in particle physics.

[Free Registration/Login Required] Learn about orbits and how an object can stay in orbit under the influence of gravity. By adjusting launch velocities users will understand how to successfully put a virtual satellite into orbit without...

Learn the affect of gravitational acceleration by calculating what Michael Jordan's hang time would be if he played basketball elsewhere in the universe.

Visit this site for an interactive tour of the atom and all aspects of particle physics. View the animations available with almost every description on this site. A great place for the fundamentals of particles and forces including a...

This illustrated essay from the NOVA Web site introduces the basic concepts of Einstein's General Theory of Relativity and what we know about cosmology as a result.

A six-lesson e-textbook covering topics in one dimension kinematics. Lessons include informational text, interactive activities, and quick, interactive comprehension checks along the way.

Mechanical energy is the most easily understood form of energy for students. When there is mechanical energy involved, something moves. Mechanical energy is a very important concept to understand. Engineers need to know what happens when...

By the end of this section, you will be able to calculate coefficient of friction on a car tire and to calculate ideal speed and angle of a car on a turn.

A page describing rotational equilibrium and non-equilibrium situations. Includes graphics, equations, and many examples.

In this document, we will try to answer a fundamental question of physical science, "Why do things start to move, slow down, speed up, stop moving or change direction?" In answering these core questions we can develop concepts that can...

Student groups are provided with a generic car base on which to design a device/enclosure to protect an egg as it rolls down a ramp at increasing slopes. During this activity, student teams design, build and test their prototype...

A collection of mechanics activities. Many pertain to Newton's laws of motion. Step-by-step directions provided with illustrations. Great for teacher demos or student projects.

In this interactive physics tutorial, students explore the variety of mathematical equations that describe the motion of satellites.

When you work with equations that show position, velocity, acceleration of objects that are flying or falling through the air, you will be using the constant that is the acceleration due to gravity. View formulas, explanations, and...

This lesson explains how gravitational force is related to free fall, acceleration due to gravity, and Newton's second law of motion.

From The Physics Classroom. Uses easy- to-understand language to discuss how circular motion principles apply to the motion of satellites. Describes the tangential velocity and centripetal acceleration of a satellite. Includes many...