This site from NASA provides an excellent tutorial on vectors and their use in physics to describe the motion of objects. Vector addition and resolution are illustrated.

Students learn that it is incorrect to believe that heavier objects fall faster than lighter objects. By close observation of falling objects, they see that it is the amount of air resistance, not the weight of an object, which...

This site examines the black hole as an object in astrophysics. Delve into this comprehensive resource that covers this concept from its history, to qualitative physics, the reality of black holes, mathematical physics and more.

Assess your understanding of Newton's three laws of motion and the ability to distinguish between the three with this interactive multiple choice quiz. Receive immediate feedback to your answers.

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...

Use this site to learn about the four forces of nature. Also learn what determines the strength of a force. This question and answer site is a link of the Fermi National Accelerator Laboratory.

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

An article describing free fall principles in roller coaster rides. In addition to the explanation of free fall, an experiment is described that allows you to test free fall with a cup of water. Part of a larger presentation on roller...

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.

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.

Defines what a gravitational field is, its value, and how to calculate it. Field-line patterns are also drawn and explained.

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

In this physics lab activity learners investigate how mass, length and angular displacement affect the period of a simple pendulum. Students control variables, testing one variable at a time, using manual techniques (stopwatch, human...

Momentum is not only a physical principle; it is a psychological phenomenon. Students learn how the "Big Mo" of the bandwagon effect contributes to the development of fads and manias, and how modern technology and mass media accelerate...

In this culminating activity of the unit which highlights how forces play a role in engineering design and material choices, students explore and apply their knowledge of forces, friction, acceleration, and gravity in a two-part experiment.

By the end of this section, you will be able to identify and explain the properties of a projectile, such as acceleration due to gravity, range, maximum height, and trajectory; determine the location and velocity of a projectile at...

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.

This essay from the NOVA Web site explores the impact Einstein made on physics and most everything we know about the cosmos.

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 lab is designed to have students investigate the factors that affect the rate at which a pendulum oscillates. Students can change the length of the pendulum, the angle of release, and the heavenly body on which the pendulum is...

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.

Physiclips thoroughly presents mechanics concepts with animations and film clips.