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s=20 000m
t=20min=1200s
F=6000N
SZUKANE:
W=?
P=?
WZÓR:
W=F*s
P=W/t
ROZWIĄZANIE;
W=6000*20 000=12MJ
P=12MJ/1200s=10kW
Odp:Szukane wartości to 12MJ i 10kW.