My question stems from a conversation I had recently with another physics buddy of mine and has to do with rotating reference frames and acceleration. Say, in a non-rotating reference frame you have an object with a known position. For the sake of argument, say it has a position A of 0i + 2j + 0k m from an arbitrary point in the fixed reference frame B. Now, switch to a rotating reference frame with angular velocity of 1 rad/s with a similar setup where point B is at the origin. Point A, in this rotating reference frame, would now appear to have a tangential acceleration. Now, I've always been told (and read) that acceleration isn't relative, but it would seem here that it is. Can anyone help me with this?