Odpowiedź:
[tex]V =[/tex] [tex]\frac{s}{t}[/tex]
s = 2km
t = [tex]\frac{1}{3} h[/tex]
[tex]\frac{2km}{\frac{1}{3}h } = 2 * 3 = 6 \frac{km}{h}[/tex]
[tex]V =\frac{s}{t} /*t\\Vt = s / :V\\t = \frac{s}{V} \\t = \frac{5km}{6\frac{km}{h} }\\ t = \frac{5}{6} h = 50\ minut[/tex]
