I know it's impossible to move faster than light, this is merely hypothetical.
When you move faster than light, you have infinite mass. Now, surely if that thing with infinite mass crashed into anything, wouldn't an infinite force would be produced (F=MA) ?
And wouldn't that force kinda fuck shit up?
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I think you got a little mixed up. In order top hypothetically reach the speed of light you would need absolutely zero mass, so to exceed it having infinite mass is out of the question. But assuming your statement is correct, it would indeed cause some damage.