zamień jednostki prędkości a)10 km/h.....m/s b)4,5 km/h.....dm/h c)6 m/s......cm/h d)3/8 dm/h....km/s e)20 km/h.......cm/min

[latex]1 km = 1000 m = 10 000 dm = 100 000 cm\1 h = 60 min = 3600 s[/latex] [latex]a) 10frac{km}{h} = 10*frac{1000m}{3600s} = 2,(7) frac{m}{s}\\b) 4,5frac{km}{h}=4,5*10000frac{dm}{h} = 45 000 frac{dm}{h}\\c) 6frac{m}{s} = 6*frac{1000cm}{frac{1}{3600}h}=2 160 000 frac{cm}{h}\\d) frac{3}{8}frac{dm}{h} = frac{3}{8}*frac{0,0001km}{3600s} = 0,0000000416667 frac{km}{s}=1,0416667*10^{-8} frac{km}{s}\\e) 20frac{km}{h} = 20*frac{100000cm}{60min} = 33 333,(3) frac{cm}{min}[/latex]