water cuts steel. 'Nuff said.
Yes,
Water can indeed cut steel. You reminded me of something that happened awhile back along the same lines...
I have been into R/C aircraft for many years now. Recently I've gotten into R/C jets. I had a 1/6 scale F-16 with a jetcat turbine engine installed. It had a wingspan of 58" and weighed in at 47 lbs. Typically in level flight it could easily exceed 200mph. Last year, I was flying at the local club airstrip and had either a broken linkage/clevis on the elevators or the elevator servo failed. I had no pitch control and it crashed into another club members car, a Nissan Altima.
Last recorded telemetry in my transmitter indicated the plane was going 232 mph when it hit, and it was a total loss. The Nissan sustained severe damage to the passenger side door. The nose cone, and indeed the majority of the airframe was made of lite-ply plywood covered in Monocote skin. We found the nose cone almost completely intact, with part of the forward canopy frame and cockpit still attached, inside the car on the passengers seat. And, there was far more of the plane inside the car than out. Luckily I was near the end of my flight and there was little fuel onboard, so there was no fire.
My point of this story is-
A cone made out of very thin wood, covered in extremely thin plastic, penetrated the sheet metal door, the inner mechanism of the power window, and the inner door panel of the Nissan nearly intact. Most everything else from mid cockpit back, was pretty much obliterated. The engine looked like an accordion, and the front landing gear was recognizable, but not much else.
If you are going fast enough, you can make lightweight, relatively soft materials, penetrate much harder, much stonger materials. The principles are indeed, fairly basic, simple physics. You truthers really need to consider furthering your limited knowledge of the subject.
L.