4-d glock

[Radar]

On the other hand... If we assume mass is a function of volume, it should be 8 times as heavy as a 3D bullet of the same dimensions in the same way that a cube has 6 times as much surface area than a square of the same dimensions. (Right? 8 times, not 6, because the 3D build plan for a hypercube contains 8 cubes?)

That would just be the surface volume the same way as a cube has a surface area consisting of 6 squares. Most of the object is in the inside, so that mass would be most likely defined by the hypervolume.

It's "hypermass", a function of its hypervolume, that's a bit trickier. We can (presumably) calculate how much it would be* based on extrapolations from lower dimensional properties, we just have no references for what that number would mean.


*If the length of a line is n the surface of a square of that size is n^2, the volume of a cube of that size is n^3, and so the hypervolume of a hypercube of that size should be n^4. The hypermass is the hypervolume times the hyperdensity. Okay, I have no idea how to calculate that.

Calculations are not a problem once the whole situation is well established. There are bigger unknowns here like for example how in general this hyperdimensional bullet interacts with our reality. I'd guess there are many possibilities to set this up with one of the main things would be how to embed our reality in some hyperdimensional model.