[填空题]
The tires of a car make 65 revolutions as the car reduces its sae7b o nm36xidd)n 12cpecz lpk7g/7rdfkjg1dl k(d51 0 ed uniformly from 95km/h to 45k0lkk1jkl/ (gg 1fc7pdd7 r5zdm/h The tires 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