since velocity is always based on a frame of reference, can I just change my frame of reference to have different amounts of kinetic energy? Where does that energy come from?
In: Physics
> can I just change my frame of reference to have different amounts of kinetic energy?
“Just,” like it’s a trivial matter…
But yes, exactly.
> Where does that energy come from?
It comes from your change of reference!
If you and a brick wall are both standing still, there’s no kinetic energy between you. So change your frame of reference: strap yourself to a [rocket sled](https://en.wikipedia.org/wiki/Rocket_sled) and fire it at the brick wall. Your frame of reference is changed alright.
A frame of reference isn’t just a relative position to another thing.
Latest Answers