[tex]dane:\\t = 100 \ s\\F = 300 \ N\\s = 200 \ m\\szukane:\\W = ?\\P = ?[/tex]
Rozwiązanie
Praca W:
[tex]W = F\cdot s\\\\W = 300 \ N\cdot200 \ m\\\\W =60 \ 000 \ J = 60 \ kJ[/tex]
Moc P:
[tex]P = \frac{W}{t}\\\\P = \frac{60000 \ J}{100 \ s}\\\\P = 600 \ W[/tex]