Here's what I'm doing:

Moving a space ship from one point in space to another point in space at a constant speed.

Here's my question:

How do I calculate the per-second vector components of the x, y, and z directions? Ei. How do I know how much the spaceship moves in a direction(x,y, or z) per second? I know how to calculate the magnitude of the vector, but I am lost beyond that.