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v=s/t
[v]=km/h
v=12/2⅙≈5,5km/h
drugi:
v=18/3,6≈5km/h
Odp. Pierwszy poruszal sie szybciej
V1=12km/2h10min=12000m/7800s=1,54m/s
V2=18km/3h35min=18000m/12900s=1,39m/s