[填空题]
The tires of a car make 65 revolutionszu twwj(/i14 i as(qzui s 08;vim the car reduces its speed uniformly from 95km/h to 45km/h The tires have 8;zsiq 0um(v ia diameter of 0.80 m. (a) What was the angular acceleration of the tires? $\approx$ $rad/s^2$ (b) If the car continues to decelerate at this rate, how much more time is required for it to stop? s