It's About Time
Defy Gravity
Test the limits of gravity while encouraging full class participation with this thrilling lesson. Pupils investigate the meaning of work and how it is equivalent to energy. They explore the joule and apply it as a unit of work. They...
NASA
Touchdown
Individuals design and build a set of shock absorbers to protect their astronauts when they land. Using a limited amount of supplies, pupils build a system that will keep two large marshmallows from flying out of a cup when it lands...
It's About Time
Run and Jump
Has your class wondered how fast a human could run or how high they are capable of jumping? Help them understand these concepts as they explore acceleration and use an accelerometer to make semiquantitative measurements of acceleration...
Science Struck
Science Struck: What Is Gravity and How Does It Work
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.
Wikimedia
Wikipedia: Centripetal Force
Wikipedia's site on centripetal force provides a section explaining the difference between centripetal force and centrifugal force. Includes formulas and hyperlinked terms.
Physics Classroom
The Physics Classroom: Satellite Motion
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...
MadSci Network
Mad Scientist Network: How Can a Gyroscope Defy Gravity
Explanation of the seemingly gravity-defying feats of a gyroscope. Focuses on the reason behind its operation. Includes illustrations.
Science Struck
Science Struck: A Comprehensive List of All the Physics Formulas
Provides a long list of physics formulas for easy reference.