[填空题]
The tires of a car make 85hl.1r g72e;bg 5xymxa revolutions as te-t0yle;m e(qdtiz3/he car reduces its speed uniformly from 90km/h to 60km/h The tires have a diameter of 0.90 m. (a) What was the angular accel0t teey; (mze-ld q/3ieration of each tire? $\approx$ $rad/s^2$(round to two decimal place) (b) If the car continues to decelerate at this rate, how much more time is required for it to stop? s
Post time 2025-2-18 20:00:22
