Algodoo

The gray ball is parented to the red ball. This means the gray ball matches the red ball's position no matter what. The red ball doesn't care at all about the gray ball and is completely unaffected.

Geom properties:

Parent:
controllerAcc = {scene.my.pos = pos; scene.my.corr = vel/100}

Child:
airFrictionMult = +inf
pos = {scene.my.pos + [1, 0] + scene.my.corr}

Requires air friction enabled.