A rocket ship is going forward at 2000 m/s and ... ...

    A rocket ship is going forward at 2000 m/s and fires its engines in order to speed up but not turn. If the absolute velocity of the exhaust gases is 3000 m/s going backwards, what is the exhaust velocity u relative to the ship?
(A) 1000 m/s
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 08. Momentum