Mathematics for IGCSE & O level - Graphs In Practical Situations (Section 4 - No. 35)
What is the meaning of a horizontal segment on a distance-time graph?
The object is accelerating
The object is stationary
The object is moving at a constant speed
The object is changing speed
Explication
A horizontal line shows the object is neither coming closer nor further away from the starting position; therefore, it is stationary.