The angular momentum of a flywheel having a rotational inertia of 0.225 kg·m² about its central axis decreases from 9.10 to 0.960 kg·m²/s in 3.60 s.
(a) what is the magnitude of the average torque acting on the flywheel about its central axis during this period?
(b) assuming a constant angular acceleration, through what angle does the flywheel turn?
(c) how much work is done on the wheel?
(d) what is the magnitude of the average power done on the flywheel?

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

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