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A disc starts from rest and speeds up at 2 rad/s^2. Through what angle does it turn in 5 s?
A25 rad
B50 rad
C12.5 rad
D10 rad
Answer & Solution
Correct answer: A. 25 rad
θ = ω0t + αt^2/2 = 0 + 0.5 x 2 x 25 = 25 rad.
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