[填空题]
The tires of a car makejhwl3z0 j-:-)lp u29aj r+je bxd4j du 65 revolutions :u d.4ic,u .k d0wlwswas the car reduces its speed uniformly from 95km/h to wdc d ws0.4i.:w,uulk 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