[填空题]
The tires of a car make 65 revolut;r4 lp wf7gk)xrk)xl. 3x) s*ayca(q 7dvm0nxions as the car reduces its speed uniformly from 95km/h to 45km/h The tires have a diameter of 0.80 qn.a*k)x0 c ys alxv(mr7dx)3m. (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