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 The Physics Hypertextbook- Parametric Equations This page offers a clear explanation of the equations that can be used to describe the one-dimensional, constant acceleration motion of an object in terms of its three kinematic variables: velocity, displacement, and time. A set of problems accompanies the text, giving students practice in conceptual, algebraic, calculus-based, and statistical questions. This is part of an online textbook in... http://physics.info/parametric/
 Physics Classroom: Circular Motion This resource guides the user through characteristics of circular motion. The same concepts and principles used to describe the motion of an object can also be used to describe and explain the motion of objects in circular pathways. This tutorial is broken into five sections addressing: the mechanics of circular motion, centripetal force, algebraic and trigonometric problems and solutions,... http://www.physicsclassroom.com/Class/circles/U6L1a.cfm
 Physics Classroom: The Forbidden F-Word Created by Tom Henderson of Physics Classroom.com, this lesson discusses one of the deadliest misconceptions among beginning physics students is that centrifugal motion (away from the center) is a "force". Many students confuse the outdated centrifugal "force" definition with centripetal force. The author gives an in-depth explanation supplemented with two animations to illustrate why the... http://www.physicsclassroom.com/Class/circles/U6L1d.cfm
 Falling Feather This site from the Exploratorium presents a demonstration showing that the acceleration of gravity is the same for different objects. The site contains a materials list, assembly instructions for creating the vacuum, and basic procedures for the demonstration. Also provided is an explanation of gravitation effects, freefall, and terminal velocity. http://www.exploratorium.edu/snacks/falling-feather
 Faster Than Sound This Public Broadcasting Service NOVA website contains information on shock waves and the speed of sound. It has a useful illustration of that shows how a sonic boom occurs at the intersection of the cone of the shockwave and the ground. Keywords links provide further information. http://www.pbs.org/wgbh/nova/barrier/boom/answer3.html
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