Odpowiedź:
1.
[tex]v = 30 \frac{km}{h} \\ t = 20min = \frac{20}{60} h = \frac{1}{3} h \\ s = 30 \frac{km}{h} \times \frac{1}{3} h = 10km[/tex]
2.
[tex]v =180 \frac{m}{s} \\ t = 1min = 60s \\ s = 180\frac{m}{s} \times 60s = 10800m[/tex]
3.
[tex]t = 7h \\ s = 315km \\ v = \frac{315km}{7h} = 45 \frac{km}{h} [/tex]
4.
[tex]t = 30min = \frac{1}{2} h \\ s = 15km \\ v = \frac{15km}{ \frac{1}{2} h} = 30 \frac{km}{h} [/tex]
5.
[tex]v = 4 \frac{km}{h} \\ s = 400m = 0.4km \\ t = \frac{0.4km}{4 \frac{km}{h} } = \frac{1}{10} h = \frac{6}{60} h = 6min[/tex]
6.
[tex]v = 10 \frac{m}{s} \\ s = 18km = 18000m \\ t = \frac{10 \frac{m}{s} }{18000m} = \frac{1}{1800} s [/tex]
