The setup for our thought experiment here is someone traveling at constant speed. By definition they are not experiencing any acceleration. If they are experi

The setup for our thought experiment here is someone traveling at constant speed. By definition they are not experiencing any acceleration. If they are experiencing a drag force they are also experiencing a thrust force that is equal to it because they are traveling at a constant speed. ‘Feeling the effect of a force’ is not the same thing as ‘experiencing an acceleration’.