Investigate what keeps us grounded and who spent a lot of time studying its details. How does gravity impact plant growth?

An equation for the law of universal gravitation is stated. The weight equation (W=m*g) is related to the law. An interactive Javascript form allows the user to practice determining the force of gravity and the acceleration of gravity...

An equation for the law of universal gravitation is stated. The weight equation (W=m*g) is related to the law. An interactive Javascript form allows the user to practice determining the force of gravity and the acceleration of gravity...

Gravity as a fundamental force is explained and an equation for universal gravitation is given.

Gravity as a fundamental force is explained and an equation for universal gravitation is given.

Gravity as a fundamental force is explained and an equation for universal gravitation is given.

A report on US attempts to detect the "gravity waves" that Einstein predicted. Laser Interferometer Gravitational-Wave Observatories in Louisiana and Washington, looking for "Tremors in the fabric of space-time," are described in words...

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

Take this ten question multiple choice quiz on energy in motion.

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.

Basic definitions and examples for the concepts of work, energy, and power. Covers kinetic and potential energy, and conservation of energy.

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

This site from Cornell University provides a very short, very telling comparison of matter and charge. This is a good site to check out on the subject, with a chart diagram to help with further information.

Use animation and other interactive strategies to help understand physics principles. Change the track and height to see if your ball can make it to the end.

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

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

Students explore mass on a spring. Some topics examined in the activities are Hook's law, sinusoidal motion, and oscillatory motion. The resource consists of video clips, lecture notes, practice problems, and exam questions. Practice...

Students explore simple harmonic motion. Some topics examined in the activities are simple harmonic motion, oscillatory motion, and Hooke's law. The resource consists of video clips, lecture notes, practice problems, and exam questions....

Students explore orbits of planets and satellites. Some topics examined in the activities are planetary motion, angular momentum of orbits, and Kepler's laws. The resource consists of video clips, lecture notes, practice problems, and...

Learn what centripetal forces are and how to calculate them. Included are two problems with the solutions provided.

Learn what centripetal acceleration means and how to calculate it. Included are two example problems with solutions.

A website that reviews centripetal force with key concepts, equations, and skills for needed to understand centripetal force.

Centripetal motion can be a complex topic so use this website to review the key concepts, equations, and skills for centripetal motion. Also, the connection to centripetal acceleration is discussed here.

Review the key concepts, equations, and skills for uniform circular motion, including centripetal acceleration and the difference between linear and angular velocity.