The following are some of the quantities have been found to be conserved in all known cases: mass, energy, momentum, angular momentum, electric charge, color charge.
Scalars:
-- temperature; (68 degrees, no direction)
-- cost; ($37.50, no direction)
-- speed; (35 mph, no direction)
Vectors:
-- trip to the store; (2 blocks, West)
-- force of gravity; (170...
The Universe is composed of "reals" and "vectors". Energy and force are vectors. Energy = Er + Ev= -mu/r + mcV where V is the vector velocity. Force is F= Fr + Fv ('r' denotes real and 'v' denotes...