Physics Concepts Motion in One Dimension Vectors and Scalars Motion in Two Dimensions Newton's Laws of Motion Work and Energy Impulse-Linear Momentum Circular Motion Kinematics Rotational Dynamics About, Links, and Tools Motion in One Dimension Description of Motion Speed and Velocity Acceleration Uniform Acceleration Free Fall Applications Vectors Mathematical Form Motion in Two Dimensions Projectile Motion Projectile Motion 1 Forces Inertia Newton's Second Law Action and Reaction Normal Force Friction Inclined Plane Contact Force Weight in Elevator Applications Weights Hanging from Ceiling Traffic Light Hanging from Horizontal Pole Traditional Atwood Machine Atwood Machine Simulation Atwood Machine with Weight on Table Description of Motion Speed and Velocity Acceleration Uniform Acceleration Applications Car Merging into Highway. Non-Constant Acceleration Sport Car Acceleration Train Stopping Time Police Car and Speeder Work Kinetic Energy Potential Energy Impulse Linear Momentum Momentum of Several Masses Momentum Conservation Circular Motion Centripetal Force Rotational Motion Work and Rotations Torque Angular Momentum Work with Calculus Speed and Velocity Acceleration Uniform Acceleration Applications Kinetic Energy-Calculus Speed and Velocity Applications Collisions Inelastic Collisions Elastic Collisions Applications Unbanked Curve Banked Curve Conical Pendulum Newton's Gravitational Applications Falling Particle Particle in a Circle Rigid Solid Turning Slender Rod Applications Spring Potential Energy Spring Constant Applications Data Collector Super Graphic Applications Mechanics Thermodynamics Electricity Modern Physics Home Ball Up Near Building Edge Champagne Bottle Cork Water Balloon-Time Falling Simulation: Ball Kicked Straight Up Ice Skater Angular Momentum These notes are under construction! Various pages may contain helpful information but others are being developed. The purpose of this notes is to help learners to understand the basic concepts of physics presented in basic introductory courses. Some of these notes include little algebra while others are presented with various calculus elements. The notes are the result of many years of experience teaching undergraduate students the three set of courses existing in most college and universities, introductory physics, algebra based physics, and calculus based physics. Acknowledge: There are two groups of educators/professionals to whom credit is due: physics textbooks authors, and JavaScript developers. During the years that I have expended teaching the subject many physics textbooks have been consulted or followed in those classes. Their input is invaluable in helping me to enhance the understanding of the different topics. From the JavaScript corner, the code used here is based on codes presented at http://www.javascript.com/ and tutorials at    http://www.w3schools.com/default.asp. In particular, I would like to mention http://www.walterzorn.de where the website author has developed key elements that boost the flexibility of website interactions. by Luis F. Sáez, Ph. D. Comments and Suggestions: LSaez@dallaswinwin.com