做匀速运动的时候牵引力与阻力的大小相等.所以,F = 1800N
F*V = P
所以,V = 60000W / 1800N = 120000/3600 m/s = 120000 m/h = 120 km/h
牵引力在 5 min 中内所做的功:= P*t = 60kW * 300s = 18000kJ = 18MJ
做匀速运动的时候牵引力与阻力的大小相等.所以,F = 1800N
F*V = P
所以,V = 60000W / 1800N = 120000/3600 m/s = 120000 m/h = 120 km/h
牵引力在 5 min 中内所做的功:= P*t = 60kW * 300s = 18000kJ = 18MJ