[填空题]
The tires of a car make 6 b1-zm qdb2/mq5 revolutions as/x l4so9xxckgoyz8:usb;xhh -* /*dy the car reduces its speed uniformly from 95km/h to 45km/h The tires havg**x 9//s;lo84yyox- u s:ckbzxx dhhe 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