Mr. Einstein, if a rocket would launch and experience 9,81 m/s² acceleration in total at start, it would stand and stay put on the launchpad; as it is the same acceleration (Thrust to Weight Ratio of 1.0) as gravity near sea level.

#Albert Einstein; Well yes, if your rocket accelerates at constant 9,81 m/s² your apple would fall as it would near sea level on earth. No matter when you try; constant accelartion = constant acceleration, at start or after two years. According to your own laws of physics however, it requires an indefinite amount of energy to reach light speed and impossible to go beyond, so I suggest you have you make some turns here and there during those two years to circumvent that issue.