Also, what are the effects of g forces on the body?

All could feel the G force building up as he pressed the ship to top speed.

I felt the G forces push me back in my seat as we started our descent.

When no mass is present one can create a similar effect by generating g forces through rotation.

He held the break, grunting against the increasing G forces.

At G forces above 4, people black out as it becomes harder for the heart to pump blood to the brain.

I asked as the G forces started to ease.

The G forces mounted, forcing him up higher against the canopy.

The fluctuating G forces in the capsule were something else.

I waved as we went by, straining to move my hand under the mounting G forces.