Cheers! ๐ Unfortunately it's the same as on Sci-Hub, the "accepted version". It'll have to do.
pglpm
Restored! Maybe worth a post update?
It's just part of a player's roleplay.
"Ethical and legal objections". The point in this case is that what's legal is unethical, and what's ethical is illegal. Analogous to other situations through history and countries, for example in the USA when it was illegal for black people to sit in certain parts of a bus, or in Germany when marriage with Jewish people was illegal.
As human beings, it's always important to make the ethical choice.
I'm actually a physics teacher ๐ In fact, as I write in the post, these questions are more about self-reflection. They bring to light some interesting points or issues about Newtonian mechanics and the way we teach it.
Please see my replies in the cross-post https://lemmy.ca/post/33867210
Completely agree, which I think is very interesting. In Newtonian mechanics, some scalar and vector quantities such as mass, internal energy, contact forces (stress), heat flux are frame-indifferent. Others, such as velocity and acceleration, are frame-dependent but we do have transformation rules for them. Some quantities โ and quite important ones โ such as momentum, are in a sort of limbo: they are frame-dependent, but there's no clear transformation rule for them.
From the point of view of relativity theory, it's interesting to note that for this particular case of coordinate transformation โ note that it is not a Lorentz boost โ we can actually calculate the spatial components of momentum in the new coordinate system, if the reported momentum is expressed as a covariant vector (p_ยต). This is because its unknown temporal component (energy) gets multiplied by zero in this transformation. But the text is ambiguous on whether the reported components are covariant or contravariant.
Regarding the third body, consider the case where its mass is, say, 2โฏkg, and the case where it's 1โฏkg instead (the momentum being the same).
Yes we're considering Newtonian mechanics in any case. What I'm especially curious about is what physical principles people use to motivate their answers.
With one of those spectacular yet "no big deal" moments we were waiting for... ๐คฃ
"Science of the Total Environment" journal? ๐คฃ๐คฃ๐คฃ๐คฃ๐คฃ Too silly even for a 3rd-rate sci-fi film...
Unfortunately they cannot yet be resized on the fly, as instead some vertical-tab extensions allow you to do. But it's a step in the right direction!