Bro this is really simple. A crewed rocket going to space will typically reach a peak acceleration of 40 m/s². A fighter jet can reach peak accelerations of 80+ m/s². So the fighter jet guy would experience WAYYY more force and “g” then the rocket crew going to space. Btw, at an acceleration of 40 m/s², it only takes about 3-4 minutes to reach a velocity of 17,500 MPH. 4 minutes dude. 4 minutes at half the acceleration of the fighter jet.