Flight Safety, that sounds good. A few small points.
<ul type="square">[*]Physicists do define "both" accelerations by calling an acceleration a vector quantity. All you've done by defining two types is you've decomposed acceleration into two independant orthogonal scalar quantities.[*]That Einstein principle that you can't tell if you're in a gravity field is called Equivalence. Lots on the net if you're interested.[*]Centrifugal force is not a real force. You're talking physics, so use physics terminology. It may seem 'real' to you, but that's not what real force means.[/list]
Happy New Year, Everyone.