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s= 3600sek (gdyż 1h to 60minut * 60 sek czyli 3600sek) * 3 m/s = 9800m
W= F*s czyli podstawiamy
W= 500N * 9800sek = 4 900 000 N = 4900 kN
Odp.Wykona pracę 4900 kN