v-4m/s s-180 km oblicz czas ile bsdzue trwalo

s=v*t t=s/v s=180km, v=4m/s=4m*3600/h=14400m/h=14,4 km/h t=180 km : 14,4 km/h=12,5 h

180km=180000m V=s/t t=s/V t=180000m / 4m/s (m się skraca) t= 45000s 45000s=750min=12,5h