On physicsclassroom.com, an assignment gives data for an object experiencing acceleration:

This is the corresponding chart for the object's velocity:

At $0$ seconds the position of the object is $0$ meters. And the velocity is $0$ m/s which makes sense. After $1$ second, the object has traveled $5$ meters. The chart says its velocity is $10$ m/s at this time.

How is this possible if the object only travelled $5$ meters within that second? Shouldn't the velocity be $5$ m/s and not $10$ m/s?