[填空题]
The tires of a car make 65 re hqo/6w2n0bvkh7o5tpvolutions as the car reduces its speed unifor:o50h (u5c il vhb,fcr 8knf7smly from 95km/h thn 5 ,h7 u5loc (b8rcfkv:sfi0o 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