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A wheel starts from rest with angular acceleration 2 rad/s^2. What is its angular speed after 5 s?
A25 rad/s
B10 rad/s
C5 rad/s
D2.5 rad/s
Answer & Solution
Correct answer: B. 10 rad/s
ω = ω0 + αt = 0 + 2 x 5 = 10 rad/s.
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