[tex]Dane:\\m = 5 \ t = 5 \ 000 \ kg\\v_{o} = 0\\t = 10 \ s\\s = 200 \ m\\Szukane:\\F_{w} = ?\\\\Rozwiazanie\\\\\underline{F_{w} = m\cdot a}\\\\ale:\\\\s = \frac{at^{2}}{2} \ \ /\cdot\frac{2}{t^{2}}\\\\a = \frac{2s}{t^{2}} = \frac{2\cdot200 \ m}{(10 \ s)^{2}} = 4\frac{m}{s^{2}}\\\\\\F_{w} = 5000 \ kg\cdot4\frac{m}{s^{2}}\\\\\boxed{F_{w} = 20 \ 000 \ N = 20 \ kN}\\\\(1 \ kN = 1000 \ N)[/tex]
