[tex]dane:\\F = 25 \ N\\a = 0,4\frac{m}{s^{2}} = 0,4\frac{N}{kg}\\szukane:\\m = ?\\\\Rozwiazanie\\\\Z \ II \ zasady \ dynamiki\\\\a = \frac{F}{m} \ \ \rightarrow \ \ m = \frac{F}{a}\\\\m = \frac{25 \ N}{0,4\frac{N}{kg}} = 62,5 \ kg[/tex]
Odp. Masa tego ciała m = 62,5 kg.
