It's About Time
The Mu of the Shoe
What is mu? Emerging scientists explore the coefficient of sliding friction, or mu, and apply its concepts as they complete activities in the interesting lesson. They measure the sliding friction between soles of their own athletic shoes...
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...
eSchool Today
E School Today: All About Forces
Forces are everywhere. Learn what they are, the characteristics of forces, different kinds of forces, and factors that affect them.
University of Alaska
University of Alaska Fairbanks: Static and Kinetic Friction
Explains what static and kinetic friction are, what their coefficients of friction are in different scenarios, and how these concepts are applied when looking at automobile braking distances and vehicle control when driving.
Science Struck
Science Struck: Static Friction vs. Kinetic Friction: The Differences
Teaches what friction force is, the difference between static and kinetic friction, and how friction force is calculated.
Khan Academy
Khan Academy: What Is Friction?
Learn about the force of friction on this reference page which defines why friction is important and how it can change physic problems.
Texas Education Agency
Texas Gateway: Glossary for Newton's Laws: Friction, Drag, and Elasticity
This is a glossary of terms and definitions used in Chapter 5: Further Applications of Newton's Laws: Friction, Drag, and Elasticity from the AP Physics online text.
Science Struck
Science Struck: Guide to Free Body Diagrams in Physics
A detailed explanation of the different types of forces that can be applied to an object and how to represent them in a free body diagram. Includes examples and some practice problems to try, with solutions provided.
University of Illinois
University of Illinois Urbana Champaign: Forces and Winds
What causes wind? How does wind affect our weather? This website is neatly organized into topics about pressure, gradient force, Coriolis force, geostrophic wind, gradient wind, friction, boundary layer wind, and sea and land breezes....
Science4Fun
Science4 Fun: What Is Friction
What is friction? Illustrated discussion of friction including the three types, its importance, and why it is avoided.
Science4Fun
Science4 Fun: Force
What is force? Illustrated discussion of how force is calculated and three familiar types.
CK-12 Foundation
Ck 12: Physics: Newton's Laws Study Guide
This study guide on Newton's Laws covers key terms, the three laws, free body diagrams, friction coefficients and tension. Includes equations and an example problem with solution. It is available for download with free registration.
Science Struck
Science Struck: A Comprehensive List of All the Physics Formulas
Provides a long list of physics formulas for easy reference.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Sliding Down an Incline Plane
Here is a simulation demonstrating an object placed on an inclined plane. The user will vary the slope of the plane to see the relationship the slope has on the gravity of the object and the static friction.
Ohio State University
Ohio State Univ.: Simple Machines & Mechanical Advantage [Pdf]
This site details how simple machines create a mechanical advantage for humans. Levers, theoretical mechanical advantage, actual mechanical advantage, and pulley systems are discussed.
Wikimedia
Wikipedia: Charles Augustin De Coulomb
Spanish-language site lets students discover the life and work of this physicist and engineer, who is known for his studies of electric charges.
Khan Academy
Khan Academy: What Are Inclines?
A webpage with equations and examples of how to solve inclined planes problems. Learn how to deal with slopes when surfaces usually aren't perfectly horizontal.