Slow missle fast ship?

[Varee (OP)]

Hi I am new here and i got a question.  If i designed a ship that move at about 9600km/s but i made a missle that only fly at about 4000km/s will the ship runinto the missle if it moving in the same direction or will the missle speed add up with the ship making it 13600km/s?

[Nightstar]

The ship will pass the missile.

[Conscript Gary]

The ship's speed won't add to the missile's speed, by the way. Trans-Newtonian products stay fixed in space essentially except when under engine power.

[Varee (OP)]

The ship's speed won't add to the missile's speed, by the way.  Trans-Newtonian products stay fixed in space essentially except when under engine power.

Oh  i was thinking the ship use fuel just to speed up slowdown or turn hmm maybe i need to read more.  This mean ship wont crash into stuff if they run out of fuel to manuever right? It will just stop whereever it is correct?

[Maltay]

Yes.  Newtonian physics, like momentum, are not modeled.