Odpowiedź :
[tex]Dane:\\F = 50 \ N\\h = 10 \ m\\t = 20 \ s\\Szukane:\\P = ?\\\\\\P = \frac{W}{t}\\\\P = \frac{F\cdot h}{t}\\\\P = \frac{50 \ N\cdot10 \ m}{20 \ s}\\\\\boxed{P = 25 \ W}[/tex]
[tex]Dane:\\F = 50 \ N\\h = 10 \ m\\t = 20 \ s\\Szukane:\\P = ?\\\\\\P = \frac{W}{t}\\\\P = \frac{F\cdot h}{t}\\\\P = \frac{50 \ N\cdot10 \ m}{20 \ s}\\\\\boxed{P = 25 \ W}[/tex]