Suppose that I am wearing some super boots that can allow me to travel anywhere from 0 to about 99% of c.Now I use these boots to travel alongside a wall and this wall at some point has a very sharp sword jutting out of it. It is safe to presume that anyone with the sword in his hand can easily cut my leg in two with it (i.e. it is that sharp). So on making contact with the sword what is likely to happen? At low speeds I am likely to just cut a little skin and get out of the trajectory and roll around (i.e if only one knee is exposed to the sword) or I'll stop if both my knees are exposed to the surface of the sword. However after my velocity reaches a certain upper bound i may cut my leg in two. But what happens at even higher speeds? After a certain velocity my momentum will be enough to drive the sword out of the wall so what will happen to me in the process? Will I cut my knee in the procedure or merely cut a little skin or maybe nothing will happen to me at all?