Lux_Lucis said:katsucats said:Depends on the extent we adhere to physics. Assuming as a part of the power the person's body would be able to withstand any speed he travels. I'll even throw in the ability to react at any speed as a freebie, since traveling at the speed of light doesn't mean you can think at the speed of light.
How about the ability to slow down after you've been traveling at some speed? Since you're essentially pushing the air in front of you outward when you move, traveling at high speeds will also cause unavoidable damage to your surroundings. It would also be LOUD. Due to your light weight, at some point you might reach terminal velocity due to air resistance. Any attempt to go faster might cause you to sidestep uncontrollable (think dropping a piece of paper), or cause shockwaves when the air collapses into itself when you go fast enough.
That means you can't, for example, use super speed to rob a bank, without obliterating the bank and all the money.
Heh the 1st issue you'll face is dying before you reach a fraction of the required speed to actually feel any change in how time moves. For example in order to feel time moving merely 2 times slower you need to move at about 87% of the speed of light.
In order to completely freeze time you have to travel at the speed of light (even slightly faster?), making your mass infinite and your world black (we need light to see).
Being stationary while moving faster than light (aka standing in frozen time) would create a black hole. Sure it'll be gone once you move but you have already effectively deleted everything around you.
While you're Not stationary and travel ftl you will not affect anything that you do not touch (everything in your event horizon will warp around you but will not be harmed).
You will, however, effectively delete anything you come in direct contact with while you travel... Meaning that you have to fly or you will fall to Earth's core and destroy it.
Obviously it's more guesswork than anything lol. Shit becomes very funky at these speeds and adding a human factor and impossible variables is just fun :>