Article
Khan Academy

Khan Academy: Particle Systems With Forces

For Students 9th - 10th
Applying the forces of wind and/or gravity to a particle system so that the system can apply force to all individual particles. In addition, adding a repeller where all the force vectors have a different direction is illustrated.
Article
Khan Academy

Khan Academy: Spring Forces

For Students 9th - 10th
Creating a simulation of a bob hanging from a spring in a two-dimensional space that responds to other forces in the environment (wind, gravity, etc.)
Article
Khan Academy

Khan Academy: Trig and Forces: The Pendulum

For Students 9th - 10th
Using Newton's Laws of motion to calculate the acceleration of a pendulum as well as to compute and draw its position along the swing and move about the screen in a computationally based graphic system.
Article
Scientific American

Scientific American: The Intricacies of a Gecko's Grip

For Students 9th - 10th
This article, published by Scientific American (June 19, 2000), explores how geckos hang on vertical surfaces. They don't use glue, or suction, or even nature's version of Velcro. Instead, they utilize intermolecular forces "to get a...
Article
University of California

The Endless Debate: Immigration and u.s. Agriculture

For Students 9th - 10th
This article describes the special treatment agriculture as received in order to retain an illegal and poorly compensated Mexican work force. Potential solutions are discussed.
Article
Khan Academy

Khan Academy: Mutual Attraction

For Students 9th - 10th
A JavaScript coding of forces where every object in a given system attracts every other object in that system (except for itself).
Article
Khan Academy

Khan Academy: Angles and Units

For Students 9th - 10th
The application of trigonometry concepts to calculate complex forces of angular velocity and acceleration is illustrated.
Article
Khan Academy

Khan Academy: Air and Fluid Resistance

For Students 9th - 10th
This article on Khan Academy is about air and fluid resistance that is caused by friction.

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