[填空题]
The tires of a car make 65 revolutions as t+ c/lam+h -hfrhe car reduces its speed uniformly f25hqhmbcq )ld 0a 3lum 2epw0mn( g9+qhal76v rom 95km/h to 45km/h Thqawqhh2lbl9 g h amvm(5060 dqe2pl3 +)nm7uce 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