Is force in unreal engine calculated in Newton?
For example: If I have a cube and I use addForce(FVector{100,0,0}), does that mean I apply a force of 100N horizontally?
Not exactly, since by default, unreal engine uses cm instead of meter for length measurement.
Newton units can be written in other form as [kgms^-2], but if you replace this with cm, you get [kgcms^-2] which is a unit that is 100 times smaller than Newton.
So to put it simply a 100 in AddForce = 1 Newton