慢车车身长125米,车速17米/秒,快车车身长140米,车速22米/秒,慢车在前面行驶,快车从后面追上并完全超过需要多少时间?(E6L+p(g/K+W/C
算式:提示;W2O(O4A/L'K(E6L+p(g/K+W/C
答:快车从后面追上并完全超过需要-Z,O*H:E0A;M'F*_*h2N:]/z6m+N7}*j秒。(E6L+p(g/K+W/C