Question: 3: The angular velocity of a rotating disk increases from 2 rad/s to 5 rad/s in 0.5 s. What's the disk's average angular acceleration? A)

3: The angular velocity of a rotating disk increases from 2 rad/s to 5 rad/s in 0.5 s. What's the disk's average angular acceleration? A) 5 rad/s B) 14 rad/s C) 6 rad/s D) 7 rad/s E) None of these

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