Odpowiedź :
[tex]Dane:\\F = 0,3 \ kN = 0,3\cdot1000 \ N = 300 \ N\\W = 206 \ J = 206 \ N\cdot m\\Szukane:\\s = ?\\\\\\W = F\cdot s \ \ /:F\\\\s = \frac{W}{F}\\\\s = \frac{206 \ J}{300 \ N} = \frac{206 \ N\cdot m}{300 \ N}\\\\\boxed{s\approx0,7 \ m}[/tex]