Odpowiedzi

2009-12-18T00:01:20+01:00
W=F x s x cos
P=w/t
siła 4N ,0.15kN, 0.01N, 120000N
droga - 300m, 10m, 30m, 3km
cos- 1, 0, 0.7, 0.22
praca- 200J, 0,4.2kJ, 79.2kJ
czas-5min, 1h60min, 25min,24min
moc- 40W, 0, 168W, 3300W