Oblicz energię kinetyczną o masie 100 kg poruszającego sie z prędkością 18 km/h
dane:
m = 100 kg
v = 18 km/h = 18*1000m/3600s = 5 m/s
szukane:
Ek = ?
Ek = mv²/2
Ek = 100kg*(5m/s)²/2 = 1 250 kg*m²/s² = 1250 J
1 kJ = 1000 J
Ek = 1,25 kJ
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dane:
m = 100 kg
v = 18 km/h = 18*1000m/3600s = 5 m/s
szukane:
Ek = ?
Ek = mv²/2
Ek = 100kg*(5m/s)²/2 = 1 250 kg*m²/s² = 1250 J
1 kJ = 1000 J
Ek = 1,25 kJ
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