[tex]Dane:\\v_{o} = 0\\t = 5 \ s\\s = 1 \ km = 1000 \ m\\Szukane:\\a = ?\\v = ?[/tex]
Rozwiązanie
Przyspieszenie:
[tex]s = \frac{at^{2}}{2} \ \ /\cdot\frac{2}{t^{2}}\\\\a = \frac{2s}{t^{2}}\\\\a = \frac{2\cdot1000 \ m}{(10 \ s)^{2}} = \frac{2000 \ m}{100 \ s^{2}}\\\\\boxed{a = 20\frac{m}{s^{2}}}[/tex]
Prędkość końcowa:
[tex]v = a\cdot t\\\\v = 20\frac{m}{s^{2}}\cdot 10 \ s\\\\\boxed{v = 200\frac{m}{s}=720\frac{km}{h}}[/tex]
