[tex]1.\\dane:\\s = 3 \ km\\t = 5 \ min = \frac{5}{60} \ h = \frac{1}{12} \ h\\szukane:\\v = ?\\\\Rozwiazanie\\\\v = \frac{s}{t}\\\\v = \frac{3 \ km}{\frac{1}{12}h} = 36\frac{km}{h}[/tex]
[tex]2.\\dane:\\v = 36\frac{km}{h} = 36\cdot\frac{1000 \ m}{3600 \ s} \\s = 100 \ m\\szukane:\\t = ?\\\\Rozwiazanie\\\\s = v\cdot t \ \ /:v\\\\t = \frac{s}{v}\\\\t = \frac{100 \ m}{10\frac{m}{s}}\\\\t = 10 \ s[/tex]
[tex]3.\\dane:\\v = 144\frac{km}{h} = 144\cdot\frac{1000 \ m}{3600 \ s} = 40\frac{m}{s}\\t = 20 \ s\\szukane:\\s = ?\\\\Rozwiazanie\\\\s = v\cdot t\\\\s = 40\frac{m}{s}\cdot20 \ s\\\\s = 800 \ m = 0,8 \ km[/tex]
