[填空题]
The tires of a car make 65 revolutions as the car reduces ucb veyiqx /pe,5o *5a0k56 ct0smj5gits speed uniformlj3)8 ocnw2:e jdit4kiy from 95km/h to 45km/h The tires have a diameter of 0.80 3 cktj)i2d4w:oiejn8 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