Friends: I understand that collisions at high speeds cause a lot more damage. Like when micro meteors strike satellites. Can someone explain how this physics differs from normal collisions? At what velocity do these effects become enlarged? I read about an electromagnetic gun whose projectile causes significantly more damage due to the speed of the projectile. Can someone elaborate on how this works? Thanks amigos, -Migs P.S. This is not a homework question! I finished M.E. a long time ago!