Odpowiedź:
5m/s=5*3600h/1000km=18km/h
10m/s=10*3600h/1000km=36km/h
15m/s=15*3600h/1000km=54km/h
72km/h=72*1000m/3600s=20m/s
50km/h=50*1000m/3600s≈13,89m/s
140km/h=140*1000m/3600s≈38,89m/s
Odpowiedź:
[tex]1.\\5\frac{m}{s} = 18\frac{km}{h}\\\\10\frac{m}{s} = 36\frac{km}{h}\\\\15\frac{m}{s} = 54\frac{km}{h}\\\\2.\\72\frac{km}{h} = 20\frac{m}{s}\\\\50\frac{km}{h} \approx13,89\frac{m}{s}\\\\140\frac{km}{h}\approx38,89\frac{m}{s}[/tex]
Wyjaśnienie:
[tex]1 \ km = 1000 \ m\\\\1 \ m = \frac{1}{1000} \ km}\\\\1 \ h = 3600 \ s\\\\1 \ s = \frac{1}{3600} \ s[/tex]
[tex]1.\\\\5\frac{m}{s} = 5\cdot\frac{\frac{1}{1000}km}{\frac{1}{3600}s} = 5\cdot3,6 \ \frac{km}{h} = 18\frac{km}{h}\\\\10\frac{m}{s} = 10\cdot\frac{\frac{1}{1000}km}{\frac{1}{3600}h} = 36\frac{km}{h}\\\\15\frac{m}{s}= 15\cdot\frac{\frac{1}{1000}km}{\frac{1}{3600}h} =54\frac{km}{h}[/tex]
[tex]2.\\\\72\frac{km}{h} = 72\cdot\frac{1000 \ m}{3600 \ s} = 20\frac{m}{s}\\\\50\frac{km}{h} = 50\cdot\frac{1000 \ m}{3600 \ s} = 13,(8)\frac{m}{s}\approx13,89\frac{m}{s}\\\\140\frac{km}{h} = 140\cdot\frac{1000 \ m}{3600 \ s} = 38,(8)\frac{m}{s}\approx38,89\frac{m}{s}[/tex]
