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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.
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## Angular Speed

by CK-12 //at grade
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

by CK-12 //at grade
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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• Interactive Simulations

## Angular Speed

by CK-12 //at grade
Learn about angular speed through this interactive simulation.
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• Simulation

## Angular Speed Simulation

by CK-12 //at grade
Explore the relationships between angular and linear speeds by racing a car around a circular track.
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• Video

## Derivation of v=rw

by CK-12 //at grade
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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• Downloadable Quiz

## Angular Speed Quiz - PPB

by CK-12 //at grade
Calculations involving the equation w = v/r.
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• Critical Thinking

## Angular Speed Discussion Questions

by CK-12 //at grade
A list of student-submitted discussion questions for Angular Speed.
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• Study Guide

## Circular Motion Study Guide

by CK-12 //at grade
This study guide provides an overview of circular and rotational motion: centripetal force, discussion of fictitious force, calculating period and frequency, determining the rotational axis, calculating angular quantities, and precession.
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