And so over the next five seconds, it actually moves 12.5 meters to the left, and then these two things net out. And so the particle has gone over 10 seconds, 12.5 meters to the right, and then 12.5 meters to the left, and so its change in position is zero meters. It has not changed. Now you might start to be appreciating what the difference between displacement and distance traveled is. So distance, if you're talking about your total length of path, you don't care as much about direction. And so instead of thinking about velocity, what we would do is think about speed. And speed is, you could view in this case, especially in this one-dimensional case, this is equal to the absolute value of velocity.