[tex]dane:\\v_{o} = 16\frac{m}{s}\\t = 2 \ s\\v = 108\frac{km}{h} = 108\cdot\frac{1000 \ m}{3600 \ s} = 30\frac{m}{s}\\szukane:\\a = ?\\\\a = \frac{\Delta v}{t} = \frac{v-v_{o}}{t}\\\\a = \frac{30\frac{m}{s}-16\frac{m}{s}}{2 \ s} = \frac{14\frac{m}{s}}{2 \ s} = 7\frac{m}{s^{2}}[/tex]
