  The vortex velocity probability distribution for two distinct vortices is
determined for the case of phase-ordering kinetics in systems with point
defects. The n-vector model driven by time-dependent Ginzburg-Landau dynamics
for a nonconserved order parameter is considered. The description includes the
effects of other vortices and order parameter fluctuations. At short distances
the most probable configuration is that a vortex-antivortex pair have only a
nonzero relative velocity which is inversely proportional to the distance
between them. The coefficient of proportionality is determined explicitly.
