Multiple Choice
A position-time graph shows a straight line with a positive slope. Suddenly, the line becomes horizontal. Which is the most likely explanation for the change in the graph?
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2. 1D Motion / Kinematics
Conceptual Problems with Position-Time Graphs
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Which of the following statements best explains a position-time graph where the slope is constant and positive?
A
The object is at rest.
B
The object is moving at a constant speed in the negative direction.
C
The object is moving at a constant speed in the positive direction.
D
The object is accelerating in the positive direction.
Verified step by step guidance1
Understand that a position-time graph plots the position of an object on the y-axis against time on the x-axis.
Recognize that the slope of a position-time graph represents the velocity of the object.
A constant slope indicates that the velocity is constant, meaning the object is moving at a constant speed.
A positive slope means that the position is increasing over time, indicating movement in the positive direction.
Therefore, a constant and positive slope on a position-time graph means the object is moving at a constant speed in the positive direction.
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