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Cum transform km/h in m/s si invers?

Răspuns :

Avem   [tex] \frac{1 km}{1 h} si transformam fiecare \frac{1000 m}{3600 s} si invers[/tex]
[tex]Uite\ aici\ un\ exemplu:\\ 72\frac{km}{h}=72*\frac{1000m}{3600s}=72*\frac{5m}{18s}=20\frac{m}{s}\\ Si\ invers:\\ 20\frac{m}{s}=20*\frac{\frac{1}{1000}km}{\frac{1}{3600}h}=20*\frac{1}{1000}*3600\frac{km}{h}=\\ 20*\frac{18km}{5h}=72\frac{km}{h}[/tex]