[填空题]
The tires of a car make 65 revolu8 v8d6 obl., xqd /0jq.txbfdsjwo 0; r,sw9 aluwwsw9yek3 .8tions as the car reduces its speed uniformly from 95km/h to 45km/h The tires have a diamewse9yw w rulk 08osj;3w ,9aw.ter 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