Odpowiedź :
t=3 s
a=6 m/s²
[tex]v=a*t=3 \ [s]*6 \ [\frac{m}{s^2}]=18 \ \frac{m}{s}\\ \\18 \ \frac{m}{s}=18*\frac{\frac{1}{1000} \ [km]}{\frac{1}{3600} \ [h]}=18*\frac{36}{10}=64,8 \ \frac{km}{h}[/tex]
[tex]dane:\\v_{o} = 0\\t = 3 \ s\\a = 6\frac{m}{s^{2}}\\szukane:\\v = ?\\\\v = a\cdot t\\\\v = 6\frac{m}{s^{2}}\cdot3 \ s = 18\frac{m}{s}\\\\18\frac{m}{s} = 18\cdot\frac{\frac{1}{1000}km}{\frac{1}{3600}{h}}=18\cdot3,6 \ \frac{km}{h} = 64,8\frac{km}{h}[/tex]