因为做匀速直线运动,摩擦力=牵引力所以 功率P=fv=mg×0.08×(108÷3.6)=1375kg×10N/Kg×0.08×30m/s=33000W
50L油能转化的机械能为:w=Q×40%=Vq×40%=50L×3.3×10^7j/L×40%=6.6×10^8J
行驶的路程为:S=w/f=6.6×10^8J/1100N=6×10^5m
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