Odpowiedzi

2010-04-06T16:34:35+02:00
P = W/t
W = F * s
P = F * s / t
P = 0,75 kW = 750 W
s = 2 km = 2000 m
t = 1,5 h
F = ?
P*t = F*s
P * t / s = F
F = 750 W * 1,5 h / 2000m
1 W = 1 N * 1 m /h
F = 750 N * m / h * 1,5 h / 2000m
F = 1125 N * m / 2000m
F = 0,56 N

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