[tex]dane:\\v_1 = 36\frac{km}{h}\\t = 15 \ s\\v_2 = 108\frac{km}{h}\\szukane:\\a = ?\\\\Rozwiazanie\\\\a = \frac{\Delta v}{t}\\\\\Delta v} = (108-36) \ \frac{km}{h} = 72\frac{km}{h} = 72\cdot\frac{1000 \ m}{3600 \ s} = 20\frac{m}{s}\\\\a = \frac{20\frac{m}{s}}{15 \ s}\\\\a = 1,33\frac{m}{s^{2}}[/tex]
