[tex]dane:\\v_{o} = 0\\t = 10 \ s\\t_1 = 4 \ s\\a = 1,25\frac{m}{s^{2}}\\szukane:\\a) \ v = ?\\b) \ s = ?\\c) \ v_{sr} =?\\d) \ v_{chw} = ?\\\\a)\\v = a\cdot t\\\\v = 1,25\frac{m}{s^{2}}\cdot10 \ s = 12,5\frac{m}{s}\\\\12,5\frac{m}{s} = 12,5\cdot3,6\frac{km}{h} = 45\frac{km}{h}\\\\b)\\s = \frac{1}{2}at^{2}\\\\s = \frac{1}{2}\cdot1,25\frac{m}{s^{2}}\cdot(10 \ s)^{2}\\\\s = 62,5 \ m[/tex]
[tex]c)\\v_{sr} = \frac{s}{t}\\\\v_{sr} = \frac{62,5 \ m}{10 \ s}\\\\v_{sr} = 6,25\frac{m}{s}\\\\d)\\v_{chw} = a\cdot t_1\\\\v_{chw} = 1,25\frac{m}{s^{2}} \cdot 4 \ s\\\\v_{chw} = 5\frac{m}{s}[/tex]
