[tex]1 \ km = 1000 \ m\\1 \ h = 3600 \ s[/tex]
[tex]6\frac{km}{h} = 6\cdot\frac{1000 \ m}{3600 \ s} = 1,(6)\frac{m}{s}\approx1,67\frac{m}{s}\\\\40\frac{km}{h} = 40\cdot\frac{1000 \ m}{3600 \ s} = 11,(1)\frac{m}{s}\approx11,11\frac{m}{s}\\\\36\frac{km}{h} = 36\cdot\frac{1000 \ m}{3600 \ s} = 10\frac{m}{s}\\\\130\frac{km}{h} = 130\cdot\frac{1000 \ m}{3600 \ s} = 36,(1)\frac{m}{s}\approx36,11\frac{m}{s}\\\\90\frac{km}{h} = 90\cdot\frac{1000 \ m}{3600 \ s} = 25\frac{m}{s}[/tex]
