If our velocity is positive at time 5.5, so if we have a positive velocity, so let's say our velocity is 5 meters per second, although they don't give us units here, so I won't use units. Let's say our velocity is 5, and then it's negative, so at some point our velocity is going to be something smaller. That means that the speed would also be decreasing. If we have a positive velocity, then the fact that acceleration is negative means that both velocity and speed would be decreasing. On the other hand, if we had a negative velocity, if we have a negative velocity at time t equals 5.5, then the fact that it's decreasing means that we're getting even more negative. If we're getting even more negative, then that means the speed is increasing. The magnitude is increasing in the leftward direction.