Khan Academy
Khan Academy: Friction Review
Review the key concepts, equations, and skills for friction, including how to find the direction and magnitude of the friction force.
Other
Focus Physical Review: Friction of Molecules
This is an article published by the American Physical Society on friction in microscopic gears that results from the adhesion of molecules. A great exploration of this new obstacle in science.
Other
Bscs: Forces and Motion Content Background Document
In this document, we will try to answer a fundamental question of physical science, "Why do things start to move, slow down, speed up, stop moving or change direction?" In answering these core questions we can develop concepts that can...
Khan Academy
Khan Academy: Air and Fluid Resistance
This article on Khan Academy is about air and fluid resistance that is caused by friction.
DOGO Media
Dogo News: Hi Tech Fabric Charges Devices on the Run
Read about an innovative technology in fabric that allows users to generate enough electricity through movement to charge devices such as cell phones. Includes video.
Other
City Journal: Let's Break Up the Big Cities
This lengthy article offers many examples in its claim that smaller municipalities do a better job of governing and providing services than huge megacities.
The Balance
The Balance: How Is Unemployment Controlled?
This article provides a brief, clear explanation of some of the means the government has of controlling unemployment when it climbs above 4%.
Famous Scientists
Famous Scientists: Charles Augustin De Coulomb
A short biography about Charles Coulomb, known for developing Coulomb's law, the definition of the electrostatic force of attraction and repulsion.
Khan Academy
Khan Academy: What Is Newton's First Law?
Newton's First Law also called the law of inertia is the most important thing to realize about motion. This article offers more information on motion and explains solved problems involving Newton's First Law. Also included is a video...
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