A wheel undergoes a uniform angular acceleration of 4.0 rad s⁻²

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

A wheel undergoes a uniform angular acceleration of 4.0 rad s⁻². After rotating through 100 rad, its angular speed becomes 30 rad s⁻¹. What was its initial angular speed? (a) 22 rad s−122\ \text{rad s}^{-1} (b) 10 rad s−110\ \text{rad s}^{-1} (c) 41 rad s−141\ \text{rad s}^{-1} (d) 29 rad s−129\ \text{rad s}^{-1}

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