[填空题]
The tires of a car makxmv fi l s(d5l:,0gywy,wrw 57e,gi 0bw 8o:kwn ln0tqxg r38p(.zt tumu7b18y 85 revolutions as the car reduces its speed uniformly from 90km/h to 6u0 8l 3(t1n 8mbnurywg. w7o8xtbzq 0 ,:tkgip0km/h The tires have a diameter of 0.90 m. (a) What was the angular acceleration 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
