Question

An object is _____ on a velocity versus time graph when the line moves away from the x-axis, and is _________ when the line moves closer to the x-axis.

Answer 1

No answer is possible if we don't know whether the line was above or below the x-axis at the beginning.

Answer 2

An object is accelerating on a velocity vs time graph when the line moves away from the x-axis and is decelerating or returning to rest when the line moves closer to the x-axis.