[填空题]
The tires of a car m al*vewu d)67ks lt8t w r +byx(t:r/97l+8pxtvk3ftwake 85 revolutions as the 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 acceleration(bl:yt8lxt3vf+w k wptr+r7t9 8/s xt 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
