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# Angular Speed

## The rate change of the radial angle for an object moving in a circle.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Angular Speed

Students will learn the difference between angular speed (\omega) and tangential speed (v) and how to calculate both.

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• Interactive Simulations

## Phases Of The Moon

Learn how the steady motion of the Moon around the Earth, and the phases created by the relative position of the Earth, Sun, and Moon, allow us to tell time by simply looking at the shape and orientation of the Moon.

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• Simulation

## Angular Speed Simulation

Explore the relationships between angular and linear speeds by racing a car around a circular track.

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• Simulation

Shows the workings of angular speed.

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• Video

## Derivation of v=rw

Provides a calculus-based explanation of the origin of the the formula v=rw and shows an example of where the equation can be applied.

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• Practice
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## Angular Speed Quiz - PPB

Calculations involving the equation w = v/r.

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• Critical Thinking

## Angular Speed Discussion Questions

A list of student-submitted discussion questions for Angular Speed.

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• Study Guide