- #1
Jehannum
- 102
- 26
I'm thinking through a few basic things - hopefully in a new way. One thing that struck me is that momentum (mv) and energy (e.g. 0.5mv^2) can be conserved but velocity is not. For one thing, velocity is relative, of course.
I'm wondering whether there's a quantity a bit like velocity but not exactly. Call it "motion" or "movement". I'd want it to be agreed on by all observers in different reference frames. Could Newton #1 be regarded as some kind of conservation law?
I'm wondering whether there's a quantity a bit like velocity but not exactly. Call it "motion" or "movement". I'd want it to be agreed on by all observers in different reference frames. Could Newton #1 be regarded as some kind of conservation law?