[tex]Dane:\\a = 6\frac{m}{s^{2}}\\v_1 = 10\frac{m}{s}\\v_2 = 35\frac{m}{s}\\Szukane:\\t = ?\\\\Rozwiazanie\\\\a = \frac{\Delta v}{t} \ \ |\cdot t\\\\a\cdot t = \Delta v \ \ /:a\\\\\underline{t = \frac{\Delta v}{a}}\\\\\Delta v = v_2-v_1 = 35\frac{m}{s}-10\frac{m}{s} = 25\frac{m}{s}\\\\t = \frac{25\frac{m}{s}}{6\frac{m}{s^{2}}} =4,1(6) \ s\\\\\boxed{t \approx4,2 \ s}[/tex]
