Having an infuriating time trying to explain physics to co works. The debate is as follows: to get to Pluto in a quick time, say less than a year, you would have to travel extremely fast. If it were possible to reach such a speed via rockets/ion drive the human body would be crushed under the extreme g-forces created to go you to that speed. Even in space if you accelerate you feel G-Forces. My co work is saying because you are strapped in to a seat and in zero g you will move at the same rate and will not feel any pressure. so to sum it up I need consensus on the following. 1 Accelerating in space create G-Force on those in a space ship that you would feel. 2 At extreme accelerations in a short space of time the human body would be crushed.