[填空题]
An automobile engine sypn9 1 e .i5c(afmuvr4sn.qf 2+egdlyg b +;k,lows down from 4500 rpm to 1200 rpm in 2.5 s. Calculate (a) its angular acceleration, assumed constant, $rad/s^2$ (b) the total number of revolutions the engine makes in this time. $rev$
Post time 2025-2-18 20:00:22
