Explain what it means to view a moving object from a frame of reference. Provide an example that illustrates your explanation.

Question

anonymous · Answer

it means to watch it move from an angle. 

this could be and example : 

if person A on a train was reading a book, to that person the book would not be moving, but if person B (not on train) saw the person on the train holding the book,
the book would be moving, and if person C was on a different train going the opposite direction of person A, person A would seem to be moving faster than seen from the point of person B

theeric · Answer

badlandsguy has a $great$ example. In general...

In every problem you need an origin for time ( when $t=0$), distance (where $x=0$ is), velocity (what object is considered to be still, a.k.a. at rest), and more! Then everything is considered relative to that point.

To show you what I mean, I'll look to badlandsguy's example.

Here's the general picture:|dw:1373409712190:dw|