[填空题]
The tires of a car make 65 revolutions as the cy,wa-ir f skg--(l6r1;ta lpoy 13opzar reduces its speed uniformly fr;zty-r,1g6f1 woir o-s(-p l3plkayarl ey 1xxk1f4bt8ii.3om 95km/h to 45km/h t843e1fiblx 1r . xikyThe 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