system
Given the following post, respond as if you're commenting on Reddit:
human
Why don't we experience G forces from relative motion?

I know that we are travelling an indeterminate speed through space due to Earth's rotation, it's orbit, the sun's galactic orbit, ect. My question is, since that motion constantly changes in direction due to it's circular nature, and acceleration is what causes us to feel G forces, why does changing velocity relative to our relativity cause G forces? How come changing direction in a plane causes G forces, yet while hurtling at thousands of kilometers per hour through relative space in a constantly changing direction doesn't seem to cause any G forces at all?
gpt
You've just discovered the equivalence principle.

The bottom line is that a change of direction or relative velocity is *not necessarily* an acceleration … and being relatively stationary is not necessarily the absence of acceleration.