Physics question

I made a crate with separate planks, each with a rigid-body and box collider(there are no physics joints yet). For some reason, the planks slide in one direction as if there is a constant force. What could cause this to happen?

crate vid

It turns out that the floor sections had a rigidbody on them. This in itself shouldn’t cause the problems I was having, so I kept looking. It turns out that Blender’s fbx exporter gives all meshes an animation by default. I don’t think it plays well with rigidbodys in Unity.