The tires of a car make 85 revolutionsas the car reduces, Ask an Expert

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The tires of a car make 85 revolutionsas the car reduces its speed uniformly from 90 km/h to 60 km/h.The tires have a diameter of 0.80 m.

(a) What was the angular acceleration of the tires?

rad/s2

(b) If the car continues to decelerate at this rate, how much moretime is required for it to stop?

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