[填空题]
The tires of a car make 65 revolution;awp qu.j k)xz+m12tls as the car reduces itly64qos9)a cf s speed uniformly from 95km/h to 45km/h The tires have a diameter4y f9ql s)6cao 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