How much force does a unit of force apply?

BodyMovers apply a force on an object, defined by the object's Force property. However, the actual amount of force applied on a given object seems to vary, and try as I might I haven't found a way to accurately measure what 1 "unit" of force is actually equal.

I've tried finding the part's mass through :GetMass() and then applying a constant force while also logging its acceleration and velocity, but I've gotten very inconsistent results.

So what I'm looking for is the definition of 1 unit of force, similar to that of a newton, which is a force that would give a mass of one kilogram an acceleration of one meter per second per second.