2.
Zapis v = 60 km/h oznacza, że ciało w czasie 1 godziny pokonuje drogę 60 km.
3.
[tex]Dane:\\s = 40 \ km\\t = 55 \ min = \frac{55}{60} \ h = \frac{11}{12} \ h\\Szukane:\\v = ?\\\\v = \frac{s}{t}\\\\v = \frac{40 \ km}{\frac{11}{12}h}\\\\\boxed{v = 43,(63)\frac{km}{h} \approx 43,64\frac{km}{h}}[/tex]
5.
[tex]Dane:\\v = 15\frac{m}{s}\\t = 4 \ min = 4\cdot60 \ s = 240 \ s\\Szukane:\\s = ?\\\\s = v\cdot t\\\\s = 15\frac{m}{s}\cdot240 \ s\\\\\boxed{s = 3 \ 600 \ m = 3,6 \ km}[/tex]
