慢车车身长125米,车速是每秒17米/秒;一列快车车身长140米,车速是每秒22米/秒。慢车在前面行驶,快车从后面追赶到完全超过需要多少时间?(j,k'|+d)e.S2t0_(n*S(A+p)o
算式:提示.L0s4A(b+t9h2~(Z4I-D9_3d(j,k'|+d)e.S2t0_(n*S(A+p)o
答:快车从后面追赶到完全超过需要2s,L9p/e9m9m6L3^秒。(j,k'|+d)e.S2t0_(n*S(A+p)o