[tex]Dane:\\m = 2 \ 000 \ kg\\v_{o} = 0\\t = 2 \ s\\s = 10 \ m\\Szukane;\\F = ?\\\\Rozwiazanie\\\\\underline{F = m\cdot a}\\\\ale\\\\s = \frac{at^{2}}{2} \ \ |\cdot\frac{2}{t^{2}}\\\\a = \frac{2s}{t^{2}}=\frac{2\cdot10 \ m}{(2 \ s)^{2}} = \frac{20 m}{4 \ s^{2}} = 5\frac{m}{s^{2}}\\\\\\F = 2 \ 000 \ kg\cdot5\frac{m}{s^{2}}\\\\\boxed{F = 10 \ 000 \ N = 10 \ kN}\\\\(1 \ kN = 1000 \ N)[/tex]
