Starting from rest, the two wheels of a mountain bike have both an angular acceleration of 4.0 rad/s^2. How long does it take to make 10 revolutions? A. 0.50 s. B. 0.71 s. C. 2.2 s. D. 2.8 s. E. 5.6 s

Starting from rest, the two wheels of a mountain bike have both an angular acceleration of 4.0 rad/s^2. How long does it take to make 10 revolutions? A. 0.50 s. B. 0.71 s. C. 2.2 s. D. 2.8 s. E. 5.6 s

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Question

Starting from rest, the two wheels of a mountain bike have both an angular acceleration of 4.0 rad/s^2. How long does it take to make 10 revolutions?

A. 0.50 s.

B. 0.71 s.

C. 2.2 s.

D. 2.8 s.

E. 5.6 s

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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