Odpowiedzi

2010-03-28T12:45:42+02:00
P=F*v
80km/h = (2 dziewiąte)
P=2dzieiąte*400=89W

Moc wynosi 89W

2010-03-28T12:46:25+02:00
P = W/t
P = F*S/t
P = F*V

1W = 1N*1m/s

F = 400N
V = 80km/h = 22i2/9 m/s

P = 400N*200/9 m/s
P = (80000/9)W
P = 8888i8/9W
P ≈ 8889 W