Henry Wilson DSc.
2013-08-30 03:44:28 UTC
Henry thinks that 9000 = -9000.
Poor old Dinky. He's no brighter than Poutnik, Androcles, Andersen,Bodkin or Wizard....or maybe even Roberts.
Dinky, what is the KE of the TREE in the flying bullet frame before
and after impact?
BULLET
he seems to be confusing conservation: that the amount measured in a single
frame before and after an event are equal,
with invariance (frame independence): the same measured in all frames.
Momentum and energy are each conserved but are not invariant, though
energy-momentum is both conserved and invariant (the momentum four vector).
Kinetic energy, which is a function of speed and can be converted to other
forms of energy, such as heat, is neither conserved nor invariant.
motion machine.
Henry Wilson DSc.