[tex]Dane:\\W = 2 \ 450 \ kJ = 2 \ 450 \ 000 \ J\\s = 12,5 \ km = 12 \ 500 \ m\\Szukane:\\F = ?\\\\Rozwiazanie\\\\W = F\cdot s \ \ /:s\\\\F = \frac{W}{s}\\\\F = \frac{2450000 \ J}{12500 \ m} = \frac{2450000 \ N\cdot m}{12500 \ m}\\\\\boxed{F = 190 \ 000 \ N = 196 \ kN}[/tex]
