Przelicz jednostki prędkości 60m/min=...........m/s 300cm/s=............m/s 20m/s=.........km/h

[latex]60frac{m}{min}=60frac{m}{60s}=1frac{m}{s}\ 300 frac{cm}{s}=300frac{frac{1}{100}m}{s}=300*frac{1}{100}frac{m}{s}=3frac{m}{s}\ 20frac{m}{s}=20frac{frac{1}{1000}km}{frac{1}{3600}h}=20*frac{1}{1000}:frac{1}{3600}frac{km}{h}=20*frac{1}{1000}*3600frac{km}{h}=\ =20*frac{1}{10}*36frac{km}{h}=2*36frac{km}h=72frac{km}h[/latex]