[填空题]
The tires of a car make 65 ccpk.+ pds6(1egitk *8uc*t yrevolutions as the car reduces its sj. wk5seg 12bp3i (qiipeed uniformly from 95km/h to 45km/h The t.ibpi (s1w 52 gjqk3ieires 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