[填空题]
The tires of a car make 85 revolutions as the ca5y ap :jiu-+x44oy umxr reduces its spe/vphk fr+h(uao 3tsm/df:d 7 6ed uniformly from 90km/h to 60km/h The tires have a diameter of 0.90 m. (a) What was the angular au+/d3kp 7odh 6 ft(vm:/ sarhfcceleration 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
