[单选题]
A rocket moves through outer space with a ci q74 2qyoeh+ionstant velocity of 90 dgrrtocts6)v6 r lt,al29 x+.8 m/s. What net force acts onv0r9trlot6)dst2ax g + 6r, lc it?
A. a force equal to its weight on Earth, mg
B. a force equal to the gravity acting on it
C. The net force is zero.
D. cannot be determined without more information
