Students learn more about forces by examining the force of gravitational attraction. They observe how objects fall and measure the force of gravitational attraction upon objects.

A page describing the physics, mathematics, and historical figures associated with planetary motion, satellite motion, and universal gravitation.

Combined with aspects of circular motion, students discover that Kepler's third law follows directly from the law of universal gravitation. This unit will expand upon the conservation of energy principle for problems beyond the confines...

Students must calculate the distance an object will move up an incline using Newton's Laws. Mass, angle, gravitational field, coefficient of friction and initial speed will be generated randomly.

Students must calculate the speed of a block when it returns to its original location on an incline using Newton's Laws. Mass, angle, gravitational field, coefficient of friction and initial speed will be generated randomly.

This article helps students understand and apply the concept of gravity and Newton's Laws.

Explanation of how astronomers and scientist developed the current theories of gravity.

This lesson in high school physics on Newton's Second Law of Motion provides a discussion of free fall and air resistance, and answers, "Why do objects which encounter air resistance ultimately reach a terminal velocity?" and "In...

Deepen your understanding about the Law of Universal Gravitation. Find out how the many scientists throughout history contributed to one of the most widely known scientific theories.

This article on weight will help you prepare for the AP Physics test. Included are example problems to help you practice.

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

By the end of this section, you will be able to understand the four basic forces that underlie the processes in nature: gravitational, electromagnetic, weak nuclear, strong nuclear forces.

An animation depicting the path of projectiles launched at various launch speeds from the fictional Newton's Mountain. Accompanying text discusses satellite motion and the requirements of orbital motion. Links to further information is...

This life of Isaac Newton' traces his life from birth through childhood to his rise as a renown scientist and mathematician.

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.

The death mask of Sir Isaac Newton, who discovered the law of gravitation.

In this activity, learners will design and construct a water bottle rocket. Students will demonstrate understanding of a good experimental design and analysis of results.

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

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.