Question

The distance-time graph of an object is a straight line parallel to time-axis (X-axis).​

Answer 1

Answer:

When the slope of distance-time graph is a straight line parallel to time axis, the object is moving with UNIFORM VELOCITY.

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Answer 2

If the distance-time graph is a straight line parallel to time axis, it indicates that the object is not moving and is at rest

As the line is parallel to the time axis, as time goes there is no change in the distance travelled. So, it means that the object is not moving.