[填空题]
An automobile engine sl)2gxc:ftp2 )ql3if4fhzd/co ows do 5kvt-xri ekgcf-9- 6twn 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
