Sorry if this is the wrong section or a post like this has been already created. I had a thought but the question remains unanswered. I have limited knowledge of physics and was hoping someone on this forum could help me. First assume you were in the vacuum of space. Next assume you had some sort of propulsion device ( engine, motor, jet, etc). Lastly assume you had infinite fuel. If you began to accelerate would you, A.) Accelerate to a peak speed pre-determined by the output of the device and continue at that speed. Also limited by numerous factors B.) Accelerate at constant rate or C.) Accelerate exponentially.