[tex]1.5 \frac{m}{s} = 1.5 \times 3.6 = 5.4 \frac{km}{h} [/tex]
[tex]4 \frac{km}{h} = 4 \times \frac{1000}{3600} = \frac{4000}{3600} \approx1.1 \frac{m}{s} [/tex]
[tex]36 \frac{km}{h} = 36 \times \frac{1000}{3600} = \frac{36000}{3600} = 10 \frac{m}{s} [/tex]
[tex]100 \frac{km}{h} = 100 \times \frac{1000}{3600} = \frac{100000}{3600} \approx 27.7 \frac{m}{s} [/tex]
