Hi,
I was playing around with cubes and noticed that when I made a blue cube fall down (using a rigidbody) and stack onto a red cube, the blue cube would slightly sink into the red cube before stopping. Why is this?
The reason why the cube can sit on top of the other one is because once it enters solid object’s space, it pushes itself away so that it won’t fall through, or invade that space. But because the physics aren’t perfect, it falls through a little before it pushes off.