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Fyzika

Jaké má zpomalení (záporné zrychlení) rovnoměrně brzdící vlak, který při původní rychlosti 20,0 m × s-1 zabrzdí na dráze 1 km?

Jaké má zpomalení (záporné zrychlení) rovnoměrně brzdící vlak, který při původní rychlosti 20,0 m × s^-1 zabrzdí na dráze 1 km?