What is the moment of inertia of the fan

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Q. Ann is driving down a street at 53km/h. suddenly a child runs into the street. If it takes Ann 0.709s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m.

Q. When a ceiling fan rotating with an angular speed of 2.50 is turned off, a frictional torque of 0.130 slows it to a stop in 20.50, what is the moment of inertia of the fan?

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