No, you will meet yourself coming and going if you are truly going in a straight line.
You need to know the earth is a spere like a ball.
How does water stay on the Earth, if the Earth is round and moves? does anyone know?
It's called gravity. You know? The reason things fall down, not up? Google it if you don't know what I'm talking about, though if your old enough to have a wikianswers account, you probably should.