On topic, as mentioned before, two many undefined initial conditions and variables supplied by OP to give a senseble answer. But in the end I'd say the answer is you cannot know at this moment. Right now time travel is not even remotely possible and we know almost nothing about how it would work, so the implications are just guesses. It's basically if time travel would work via method A then the implications would he this and that. Until we understand the concepts and relation between time, energy, space(movement, speed, form etc) and possibly at this point unknown other factors betger, there is no answer to this question.
However you could make a (thought)model where you scrap a bunch of variables or add certain simplifications and/or assumptions tomake it a bit more workable.
25-Feb-2017 23:15:24