[填空题]
The tires of a car make 65 revolutions as the car bfoyq zg(5o//w*knd) reduces its speed u o3r0n2(+fnt id.ma2z7bi4:vh l fpjql:w7 irniformly fro3z :jdao7vwfn lr0 qf27 irmh+t.inl i42b(p:m 95km/h to 45km/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