Easy. Just generate a small, but dense planet-sized mass opposite the direction of momentum, then terminate its existence once momentum has ceased. Don't break

Easy. Just generate a small, but dense planet-sized mass opposite the direction of momentum, then terminate its existence once momentum has ceased. Don't break earth or the space-time continuum in the process though - you might agitate stockholders. Seriously though, physics is physics. Software can do a lot, but it can't do magic.