This principle holds componentwise for both elastic and inelastic collisions, unlike a similar statement involving kinetic energy.
This principle can be strengthened by a Cauchy continuity equation that can be used to derive the Navier–Stokes equations. Any system which is invariant under translation in space will follow this principle, according to Noether's theorem. This principle implies that a system's center of mass will move with (*) constant velocity. This principle holds componentwise for both elastic and inelastic collisions, unlike a similar statement involving kinetic energy. For 10 points, name the principle according to which the product of mass and velocity remains fixed in the absence of external forces.
This principle can be strengthened by a Cauchy continuity equation that can be used to derive the Navier–Stokes equations.
conservation of momentum [prompt on answers mentioning inertia; prompt on answers mentioning any of Newton’s laws] &lt;SE&gt;