[填空题]
The tires of a car mu*f wrfx/43uc ake 65 revolutions as the car reduces its speed uniformly 8 xpg7c gxfr.k;yw64pfrom 95km/hgg k 64; ypcxp7.8rwfx to 45km/h 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