5. A wheel takes 3.00 s to rotate 36.0 rounds. Its angular speed at the end of the 3.00-s interval is 27.0 rad/s. What is the constant angular acceleration of the wheel? (rad·s⁻²)
(A)2.0
(B)1.0
(C)3.0
(D)0.5
(E)4.0 

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