[tex]dane:\\v_{o} = 0\\t = 10 \ s\\F_1 = 300 \ N\\F_2 = 100 \ N\\g = 10\frac{N}{kg}\\szukane:\\a) \ F_{w} = ?\\b) \ a = ?\\c) \ m = ?\\d) \ F_{g} = ?\\e) \ \Delta v = ?\\f) \ v_{sr} = ?\\\\Rozwiazanie\\\\a)\\F_{w} = F_1 - F_2\\\\F_{w} = 300 \ N - 100 \ N = 200 \ N\\\\b)\\s = \frac{at^{2}}{2} \ \ /\cdot\frac{2}{t^{2}}\\\\a = \frac{2s}{t^{2}}\\\\a = \frac{2\cdot200 \ m}{(10 \ s)^{2}} = 4\frac{m}{s^{2}}[/tex]
[tex]c)\\F_{w} = m\cdot a \ \ /:a\\\\m = \frac{F_{w}}{a}\\\\m = \frac{200 \ N}{4\frac{m}{s^{2}}} = \frac{200 \ N}{4\frac{N}{kg}}\\\\m = 50 \ kg[/tex]
[tex]d)\\F_{g} = m\cdot g\\\\F_{g} = 50 \ kg\cdot10\frac{N}{kg} = 500 \ N\\\\e)\\a = \frac{\Delta v}{t} \ \ /\cdot t\\\\\Delta v = a\cdot t\\\\\Delta v = 4\frac{m}{s^{2}}\cdot10 \ s = 40\frac{m}{s}[/tex]
[tex]f)\\v_{sr} = \frac{s}{t}\\\\v_{sr} = \frac{200 \ m}{10 \ s} = 20\frac{m}{s}[/tex]
