What are the units of energy-momentum? Momentum is massdisplacement/time, while energy is length^2mass/time^2, so the conversion ratio would have to have units of length^2/displacement-time. You can use some tricks to make it appear to have units of length/time (speed), but then you need to permit either momentum or energy to be negative.
Is the binding energy variable depending on velocity? Losing mass at rest does conserve momentum, while losing mass in motion does proportionately to the speed of the lost mass. (and notably, NOT depending on whether it was moving towards, away, or lateral to the observer- red/blue shift is irrelevant). Is the amount of energy observed to be released from a given atomic reaction variable depending on the speed of the reactants?
Energy-momentum is most emphatically conserved in relativity, just not energy and momentum separately.
What are the units of energy-momentum? Momentum is massdisplacement/time, while energy is length^2mass/time^2, so the conversion ratio would have to have units of length^2/displacement-time. You can use some tricks to make it appear to have units of length/time (speed), but then you need to permit either momentum or energy to be negative.
Is the binding energy variable depending on velocity? Losing mass at rest does conserve momentum, while losing mass in motion does proportionately to the speed of the lost mass. (and notably, NOT depending on whether it was moving towards, away, or lateral to the observer- red/blue shift is irrelevant). Is the amount of energy observed to be released from a given atomic reaction variable depending on the speed of the reactants?