Read about the life of Isaac Newton and his many accomplishments in physics, mathematics, optics, and religious study, and how his discoveries helped in space research.

[Free Registration/Login Required] Learn about the universal law of gravity and the role Newton played in relating terrestrial and celestial mechanics to one another.

In this student-paced module, students apply Newton's Laws of Motion to everyday life, calculate mathematical relationships involving force and motion using algebraic formulas, and understand the difference between mass and weight.

Through illustrated examples and interactive practice problems, students find the value of forces acting upon objects using force equations.

Biography of Sir Isaac Newton (1642-1727), a scientist whose impact is felt in many disciplines today. His laws of motion are integral to basic physics, and he co-invented calculus.

Through interactive illustrations and practice problems, students study Newton's Universal Law of Gravitation.

This study guide on gravitation covers some key vocabulary, Kepler's Laws of Planetary Motion, and orbiting bodies or satellites. Includes important equations. It is available for download with free registration.

A site dedicated to help students prepare for the AP Physics B test. This specific site reviews gravitation including Newton's Law of Gravity, orbits of planets and satellites, and Kepler's three laws. Site contains links to video...

In this interactive module students will explore what different ancient cultures believe was an explanation of the stars and planets. They will look at how the work of Nicolas Copernicus revolutionize the world of astronomy and learn how...

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

This University of Minnesota site provides a series of contextually rich, real-world problems demonstrating force and Newton's second law of motion.

A very detailed look at gravitational force and the many theories that have been put forward to try to explain it. Includes lots of illustrations.

Intended for students with a strong math and science background, a course introducing physics concepts of Newtonian mechanics, special relativity, gravitation, thermodynamics, and waves. Twenty-four class sessions in video format are...

A demonstration/lab idea for determining the numerical value of the universal gravitation constant using a torsion balance.

An interactive simulation that teaches about gravitational force, Newton's Third Law, and force pairs by varying properties affect the gravitational force exerted between two objects. This simulation can either be downloaded or played...

[Free Registration/Login Required] Test your knowledge of Newton's Law of Universal Gravitation with an animation and a short quiz.

Through illustrated examples and interactive practice, students explore Newton's ability to relate the cause for heavenly motion (the orbit of the moon about the earth) to the cause for Earthly motion (the falling of an apple to the...

A short description of how Cavendish measured the value of G - the universal gravitation constant and supported Newton's theory. Illustrated.

Peruse this resource to learn about gravity, its importance, the Universal Law of Gravitation, the difference between mass and weight, and more fun facts.

From high school geography class, you may remember that "air tends to flow from high pressure to low pressure". To understand why this happens, it is key to realizing that gasses (but also liquids) exert a force on their surroundings...

Explore the world of finding individual forces. "The process of determining the value of the individual forces acting upon an object involve [sic] an application of Newton's Second law and an application of the meaning of the net force."

This site is from the Physics Department at Georgia State University. The conservation of energy as a fundamental conservation law is presented and compared to other conservation laws (momentum and angular momentum). Links to further...

Manipulate the mass and distance of two objects to see how these properties change the gravity force.

This University of Minnesota site provides a series of contextually rich problems pertaining to force, Newton's second law of motion, and linear kinematics.