Mathematics for IGCSE & O level - Graphs In Practical Situations (Section 4 - No. 31)
If the gradient of a speed-time graph is zero, what does this imply about the object's motion?
The object is stationary.
The object is moving at a constant speed.
The object is accelerating.
The object is decelerating.
Explication
A zero gradient means that the speed is not changing, indicating constant speed.