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The Meaning of Constant Acceleration
Sometimes an accelerating object will change its velocity by the same amount each second. As…
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Acceleration
The final mathematical quantity discussed in Lesson 1 is acceleration. An often confused quantity, acceleration…
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Average Speed versus Instantaneous Speed
Since a moving object often changes its speed during its motion, it is common to…
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Calculating Average Speed and Average Velocity
As an object moves, it often undergoes changes in speed. For example, during an average…
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Velocity as a Vector Quantity
Velocity is a vector quantity that refers to "the rate at which an object changes its position." Imagine…
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Speed and Velocity
Just as distance and displacement have distinctly different meanings (despite their similarities), so do speed…
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Distance and Displacement
Distance and displacement are two quantities that may seem to mean the same thing yet…
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Scalars and Vectors
Physics is a mathematical science. The underlying concepts and principles have a mathematical basis. Throughout…
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Kinematics
Describing Motion with Words Introduction to the Language of Kinematics IntroductionScalars and VectorsDistance and DisplacementSpeed…
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Blackbody Radiation
A blackbody refers to an opaque object that emits thermal radiation. A perfect blackbody is one that absorbs…