[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...

Students must calculate the mass of a planet based on the orbital motion of the moon going around the planet.

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.

This site from NASA states Kepler's second law of planetary motion and depicts its meaning with an informative diagram. Relates the law to conservation of energy principles and discusses the eccentricity of a satellite's (or a planet's)...

Students must determine speed of a satellite by timing the satellite for part of its orbit. Students must also determine the period of the orbit based on their timing.

Do you know how gravity affects you? This module defines gravity and explains how gravity affects the motion of objects.

This lab is designed to allow students to explore different aspects of satellite motion. Students can vary the mass of the satellite, the orbital radius of the satellite and the body that the satellite is orbiting. Students can measure...

The three laws of planetary motion as described by Kepler are stated and elaborated upon. Useful graphics and an easy-to-understand language are used to explain the nature of planetary motion. Both conceptual and mathematical. Includes a...

Through illustrated examples and practice problems, this interactive physics tutorial helps students clear up their possible misconceptions about weightlessness.

The orbits of satellites are described and an energy analysis is performed. Kinetic, potential and total mechanical energy are explained and applied to the motion of satellites.

Do you think you could fire an "unpowered" object into orbit? By controlling the angle and speed at which the satellite is launch, students will try to launch a satellite into space with this computer model. Activity includes questions...

An outstanding page describing Kepler's three laws of planetary motion.

At this site from Cornell University, Kepler's three laws of planetary motion are stated. There are brief explanations of each. The laws are applied to explain the features of planetary orbits as well as the motion of binary star...

Through interactive practice problems and illustrated examples, students explore energy relationships for satellites.

In the following interactive students will begin to understand the laws of Kepler regarding planetary motion and derive the third law of Kepler for circular orbits. They will also discuss the Ptolemaic model of the universe.

Describes the logic behind the development of Newton's law of universal gravitation. Beginning with Johannes Kepler and his three laws of planetary motion, content walks the reader through Newton's thought process and development of this...

[Free Registration/Login Required] Learn about Kepler's Laws of motion by planning a trip to Mars using a Hohmann transfer orbit.

Third graders use their bodies to act out the motions of earth.

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.

This site from NASA states Kepler's third law of motion and extends it to develop an equation for the velocity of an orbiting planet.

Kepler's second law of planetary motion is stated and explained. An animation of the orbit of a planet and an accompanying graphic assists in explaining the meaning of the law of equal areas.

This site from the Illinois Institute of Technology provides a set of directions for the creation of a solar system model out of paper mache. Includes orbital distances and planet diameters for the nine planets. Great idea for a student...

College-level online course highlighting the study of classical mechanics. This course focuses on Newtonian mechanics, fluid mechanics, and kinetic gas theory. Course features include a 35 video lecture series by Walter Lewin. Also link...

A science simulation launches a projectile from the top of a mountain testing Newton's theory introduced in Principia.