Răspuns :
Vm=D/T
Vm=viteza medie
D=distanta totala
T=timp total
Vm=(3*60+2*80)/(3+2)=(180+160)/5=340/5=68km/h
Vm=viteza medie
D=distanta totala
T=timp total
Vm=(3*60+2*80)/(3+2)=(180+160)/5=340/5=68km/h