Odpowiedzi

2010-02-15T19:15:04+01:00
Dane:
m = 60 kg
h = 3 m
t = 20 s
Rozw.:
P = W/t
W = Fc × h
P = Fc × h / t
Fc = m × g
P = m × g × h / t = 60 kg × 10 [m/s²] × 3 m / 20 s = 90 W
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