The angular velocity of a rotating turntable is given in rad/s by ω(t) = 4.5 + 0.64t - 2.7t2.What is its average angular acceleration between t = 1.0 s and t = 3.0 s?
A) 0.64 rad/s2
B) −5.4 rad/s2
C) −7.7 rad/s2
D) −10 rad/s2
E) −27 rad/s2
Correct Answer:
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