Which of the following best describes the slope of the velocity-time graph for uniform velocity?
The slope is zero at all points
On a velocity–time graph, the slope represents the rate of change of velocity with time, which is the acceleration. When the velocity is uniform, it does not change with time, so the acceleration is zero.
Since acceleration is zero, the slope of the velocity–time line is zero at every point, and the graph is a horizontal straight line parallel to the time axis. A positive or negative constant slope would mean uniform acceleration or deceleration, and a slope changing at every point would mean non-uniform acceleration — none of these describes uniform velocity.
Hence, the answer is The slope is zero at all points.
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Important Questions from Motion
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