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Description of Rotation
Rotation is described in terms of angular displacement , time , angular velocity, and angular acceleration . Angular velocity is the rate of change of angular displacement and angular acceleration is the rate of change of angular velocity. The averages of velocity and acceleration are defined by the relationships:
| Average angular velocity: |  |
| Average angular acceleration: |  |
where the Greek letter delta indicates the change in the quantity following it.
 | A bar above any quantity indicates the average value of that quantity. If α is constant, equations 1,2, and 3 represent a complete description of the rotation. Equation 4 is obtained by a combination of the others. |
You might want to try a numerical exploration of these equations and see them stated in words.
Eli Priyatna 30 Apr, 2011--
Source: http://basistik.blogspot.com/2011/04/animated-physics-description-of.html
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