[tex]Dane:\\m = 200 \ t = 200 \ 000 \ kg\\v_{o} = 0\\t = 1 \ min = 60 \ s\\s = 0,6 \ km = 600 \ m\\szukane:\\F_{c} = ?\\\\Rozwiazanie\\\\F_{c} = m\cdot a\\\\ale:\\\\s = \frac{at^{2}}{2} \ \ /\cdot\frac{2}{t^{2}}\\\\a = \frac{2s}{t^{2}} = \frac{2\cdot600 \ m}{(60 \ s)^{2}}=\frac{1200 \ m}{3600 \ s^{2}} =\frac{1}{3} \ \frac{m}{s^{2}}[/tex]
[tex]F_{c} = 200 \ 000 \ kg\cdot\frac{1}{3}\frac{m}{s^{2}}\\\\\boxed{F_{c} = 66 \ 666,(6) \ N = 66,7 \ kN}[/tex]
[tex](1 \ kJ = 1000 \ J)[/tex]
Odp. Siła ciągu lokomotywy ma wartość 66,7 kN.