[填空题]
The tires of a car make 65 revolutions mu8 7oq)9- zkgq j8odnas the car reduktexnnam2j - 5i1t77l-ejl ov -4+mq lces its speed uniformly from 95km/h to 45km/h 5o lt2lja1e q lek7mi tjn-xnv- +47m-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