To trzeba zamienic. Dam 15 pkt !!! Na jutro !!

[latex]50 frac{km}{h } = 50 * frac{1000 m }{3600 s } = 13,9 frac{m}{s} [/latex] [latex]32 frac{km}{h } = 32 * frac{1000 m }{3600 s } = 8,9 frac{m}{s} [/latex] [latex]100 frac{m}{s } = 100 * frac{ frac{1}{1000}km }{ frac{1}{3600 } h} = frac{100}{1000} km * frac{3600}{1h} = 360 frac{km}{h} [/latex] [latex]7 frac{m}{s} = 7 * frac{ frac{1}{1000}km }{ frac{1}{3600} h} = frac{7}{1000} km * frac{3600 }{1 h } = 25.2 frac{km}{h} [/latex]