Răspuns :
P=L/t=F*d/t=1200*3600/60*60 W unde
F=1,2KN=1200N
d=3,6km=3600m
t=1h=60min=60*60s
P=1200W=1,2kW
Succes!
F=1,2KN=1200N
d=3,6km=3600m
t=1h=60min=60*60s
P=1200W=1,2kW
Succes!