[tex]Dane:\\t = \frac{1}{3} \ min = \frac{1}{3}\cdot 60 \ s = 20 \ s\\\Delta v = 360\frac{km}{h} = 360\cdot\frac{1000 \ m}{3600 \ s} = 100\frac{m}{s}\\Szukane:\\a = ?\\\\a = \frac{\Delta v}{t}\\\\a = \frac{100\frac{m}{s}}{20 \ s}\\\\\boxed{a = 5\frac{m}{s^{2}}}[/tex]