By motion we mean of necessity motion relative to some frame of reference which is conventionally spoken of as fixed.
When, in any problem, the values of u, v, w, p, q, r have been determined as functions of t, it still remains to connect the moving axes with some fixed frame of reference.
But sometimes it is hard to tell them apart when we don't have an offline frame of reference.
Intimacy is one of the best things about love, when lives begin to have a common frame of reference and experience.
Clearly, there's plenty to work with here, so use price as your first frame of reference.