If the position versus time graph of an object is a horizontal line, the object is

Question

Quizplus · Accepted Answer

If the position versus time graph of an object is a horizontal line, it means that the position of the object is not changing with time. This can only happen if the object is at rest. Therefore, the correct answer is (C) at rest.

Option (A) cannot be true because a horizontal line on a position versus time graph implies that the speed of the object is zero, not constant non-zero speed. Option (B) is not possible because acceleration is the rate of change of velocity with time, and a horizontal line on a position versus time graph implies that the object has zero velocity, therefore zero acceleration. Option (D) is not a physically possible scenario as infinite speed is not possible. Therefore, the correct answer is (C) at rest.

If the Position Versus Time Graph of an Object Is