[填空题]
An automobile engine 9bpc.2c 1aoaw slows down from 450mv rlyeoopcrx7 v ap4e3ay ,1j+;19w 20 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
