What does a horizontal line on a position-time graph indicate about the object?
A: The object has a position of zero
B: The object remains still
C: The object is accelerating
D: The object has a constant, nonzero velocity
B: The object remains still. A horizontal line on a position-time graph indicates that the object is not changing its position over time, which means it is not moving or has a constant velocity of zero.
its B
A horizontal line on a position-time graph indicates that the object has a constant, nonzero velocity. Therefore, the correct answer is D: The object has a constant, nonzero velocity.
To determine the correct answer, let's first understand what a position-time graph represents. A position-time graph shows the relationship between an object's position and the time it takes to reach that position.
Now, if we have a horizontal line on a position-time graph, it means that the object's position is not changing with respect to time. In other words, the object is not moving. Therefore, the correct answer is B: The object remains still.
To explain how to arrive at this answer, you can identify the slope of the horizontal line. The slope of a position-time graph represents the object's velocity. Since a horizontal line has a slope of zero, it indicates that the object's velocity is zero. A nonzero velocity would result in a sloped line on the graph, not a horizontal one. Therefore, we can conclude that the object is not moving.