The shape of the worldline of an object when it is plotted on the vertical axis will be a vertical line to point.
When an object is at rest, it will not change its coordinates when it moves. At this time, it will be fixed on the horizontal axis and move on the vertical axis. So, the shape of the object will be a straight vertical line.
The concept explained is the theory of relativity, which was proposed by Albert Einstein. It's a theory of gravity that mentions that the force of gravity occurs from the curvature of space and time. The worldline of an object is the time or way that an object spends in space.
This theory mainly explains how an object behaves in space and an object with a higher mass takes a lot of time.
To learn more about Theory of Relativity,
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