THI: So I'd say "acceleration isn't motion" is true to the same extent that "velocity isn't motion" is true.
SM: I would understand that response, if my acquaintance had taken that position. At least, it is consistent and intelligible.
It is possible that that is what my acquaintance...
An acquaintance and I are having a dispute and I am looking for an answer that will hopefully end the dispute.
My acquaintance asserts that:
There are uniform motions and non-uniform motions.
Uniform motions are relative.
Accelerations are absolute.
Rotations are...