Question

What you can say about the motion of an object whose distance time graph is in straight line parallel to the time axis?

Answer 1

Slope of the line in distance time graph gives us speed.

It is given that
Line formed in distance-Time graph is straight line parallel to x-axis. Therefore it’s speed is zero. It means body is at REST.

Answer 2

If the distance-time graph of an object is a straight line parallel to the time axis, it shows that the distance of the object from its starting position is just the same at all times.

Since the object remains at the same distance from the starting position, it is not moving. The object is stationary.