An electric motor’s shaft speeds up uniformly from to in

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

An electric motor’s shaft speeds up uniformly from

10\,\text{rad s}^{-1}

50\,\text{rad s}^{-1}

5\,\text{s}

. Calculate its average angular velocity during this

5\,\text{s}

interval. (a)

40\,\text{rad s}^{-1}

(b)

30\,\text{rad s}^{-1}

(c)

25\,\text{rad s}^{-1}

(d)

12\,\text{rad s}^{-1}