Is there a difference between the two? The problem reads:(adsbygoogle = window.adsbygoogle || []).push({});

A grindstone of radius 4.0m is initially spinning with an angular speed of 8 rad/s. The angular speed is then increased to 10 rad/s over the next 4 seconds. Assume that the angular acceleration is constant. What is the average angular spped of the grindstone?

r= 4m

Wo= 8 rad/s

W= 10 rad/s

to= 0s

t = 4s

avg angular velocity = delta theta / delta t

= 10 - 8 / 4 - 0

= .5 rad/s

Is this correct? I only see equations for velocity, not speed.

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# Homework Help: Speed vs Velocity

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