[tex]Dane:\\v_{o} = 0\\t = 4 \ s\\v = 8\frac{m}{s}\\Szukane:\\a = ?\\s = ?[/tex]
Rozwiązanie
Przyspieszenie:
[tex]a = \frac{\Delta v}{t} = \frac{v-v_{o}}{t} = \frac{v}{t}\\\\a = \frac{8\frac{m}{s}}{4 \ s}\\\\\boxed{a = 2\frac{m}{s^{2}}}[/tex]
Przebyta droga:
[tex]Dla \ \ v_{o} = 0\\\\s = \frac{1}{2}at^{2}\\\\s = \frac{1}{2}\cdot2\frac{m}{s}\cdot(4 \ s)^{2}\\\\\boxed{s = 16 \ m}[/tex]
[tex]Lub\\\\s = v_{sr}\cdot t\\\\v_{sr} = \frac{1}{2}(v_{o}+v) = \frac{1}{2}v\\\\s = \frac{1}{2}vt\\\\s = \frac{1}{2}\cdot8\frac{m}{s}\cdot4 \ s\\\\s = 16 \ m[/tex]
