[tex]Dane:\\m = 80 \ kg\\h = 200 \ m\\t \approx 5 \ min \approx 5\cdot 60 \ s \approx300 \ s\\g = 10\frac{N}{kg}\\Szukane:\\W = ?\\P = ?\\\\Rozwiazanie\\\\Praca:\\\\W = E_{k} = mgh\\\\W = mgh\\\\W = 80 \ kg\cdot10\frac{N}{kg}\cdot 200 \ m\\\\\boxed{W = 160 \ 000 \ J = 160 \ kJ}\\\\Moc:\\\\P = \frac{W}{t}\\\\P=\frac{160000 \ J}{300 \ s}\\\\\boxed{P\approx533 \ W}[/tex]
