Your speed is 5 meters per second whether you're going to the left or to the right. Your velocity, you actually care whether you're going to the left or the right. Let's just keep that in mind while we try to solve this problem. The best way to figure out whether our rate of change is increasing or decreasing is to look at the acceleration because acceleration is really just the rate of change of velocity. Then we can think a little bit about this velocity versus speed question. What is the acceleration at time 5.5? Get the calculator out.