Question

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

Answer 1

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

Answer 2

180km=180000m
V=s/t
t=s/V
t=180000m / 4m/s (m się skraca)
t= 45000s

45000s=750min=12,5h