1、速厅颤度V=S/t=32.4*1000/(40*60)m/s=13.5m/s2、牵引力所做的功W=FS=2000*9.8*32.4*1000J=635040000J3、牵引力所做功的功率P=W/嫌芹t=635040000/扮者败(40*60)w=264600w