[填空题]
The tires of a car m zg644:izvrv /m4cml lake 65 revolutions as the car reduces its speed uniformp mo/ pqbx() w/agh+czi 5sc-3ly from 95km/h to 45km/h bqp/-hzwm x5/ c+(a sop)3gci 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