Space Engineers

[enforcer9]

So I just had a terrifying/great experience. On the maiden voyage of my first huge starship, I decided to turn off the reactor so I could walk around and see what things looked like while hurtling through space at 55 meters per second. Turns out you don't move at a relative speed to the ship you're inside, instead you're slammed against the back wall of the ship. Intent on not losing this save or blindly ramming into a meteor, I spent the next fifteen minutes valiantly sliding up and down the back wall of my bridge, turning my jetpack on/off to build some pitifully bad momentum in order to reach the command console and restore power. The ship finally came to rest at destination nowhere. I am now lost, but I still have a kick-ass spaceship.

Reactors power the gravity generator. You learning the hard way.

I think he means that he should already being standing/floating still in relative to the ship, since he was in it since he first started moving, the momentum would be transferred to him as well. When he cut off the power and he started floating, he lost all his momentum, which shouldn't happen.

At least I think that's what he's trying to say.