[填空题]
The tires of a car make 65 revolutions j gqzw4.*x zqevm9f;3as the car y g g.)8gslv mjng;2w44dpxy)reduces its speed uniformly from 95km/h to 45km/h The tires have a diameter of 0.80 m.2x 8;gygp4ns )y4.md)ggvwj l (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