[填空题]
The tires of a car make 65 revolutions as the car /*kt;fc6yyo 8k8eomj7y* hn zreduces its speed uni4mrm8t;6;q(g mqice fformly from 95km/h to 45km/h The q(q4;6ifmc8 gm;trmetires have a 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