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2010-02-25T12:33:25+01:00
P = 17 kW = 17000 W = 17000 J/s
V = 108 km/h = 108000 m/3600 s= 30 m/s
F = ?

P = W/t
W = F*s
P = F*s/t ; ale s/t = V
P = F*V
F = P/V
F = 17000 W/30 m/s
F = 566,7 N
jednostki:
[ J/s/m/s] = [J/s*s/m] = [J/m] = [N*m/m] = [N]
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