A brief and basic explanation of speed, velocity and acceleration. There is also a tool to create your own graphs for accelerating objects and a short quiz to test your knowledge.
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Edinformatics.com
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Explanation and clear diagram of the force vectors involved when a mass is on an inclined plane.
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Physics 24/7
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This website provides not only an explanation of how the ballistic pendulum can be used to measure the speed of a bullet but also a calculator to check your work. It can be used to explain a similar assembly involving a spring instead of a pendulum as well. You simply substitute the equation for the potential energy of a spring for (M+m)gd -- the potential energy of the pendulum.
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Hyperphysics
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This website contains Newton's laws as applied to an Atwood machine with algebra detailing the solution.
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jhu.edu Newton's law problems
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This website contains information and diagrams regarding the physical principles describing the motion of an Atwood machine. It also has a form in which you can plug in numbers and get results for tension.
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gsu.edu Atwood machine
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In this video, Salman Khan of Khan Academy introduces the basic concepts of motion. Part 3 of 3.
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Khan Academy
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Includes information on oscillations, simple harmonic motion, period, Hooke's Law, and energy with mass-spring systems. Many diagrams and equations.
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Spark Notes
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A clear explanation of position, velocity and acceleration with an interactive demonstration where one chooses the initial conditions for two objects and then watches them move as time goes by.
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Fear of Physics: Physics Explained Finally
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An extensive lectures on all aspects of a pendulum are given, accompanied by five interactive Java labs.
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University of Basel, Switzerland
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This is compilation of clarifications to common misconceptions in kinematics.
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Montana State University Physics Department
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