Ohio Assessment for Educators (OAE) Integrated Science (024) Practice Exam

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What is indicated by constant velocity on a distance vs time graph?

  1. Acceleration

  2. Non-constant speed

  3. Speed is changing

  4. Uniform speed over time

The correct answer is: Uniform speed over time

In a distance vs. time graph, constant velocity is represented by a straight line that has a constant slope. This indicates that the object is covering equal distances in equal intervals of time, which means it is maintaining the same speed throughout the entire duration of the observation. This condition is described as uniform speed over time. When the line is straight, it signifies that there is no change in speed, hence no acceleration is occurring. If the speed were changing, the line would be curved rather than straight. Therefore, the uniform speed indicated by a straight line on the graph clearly denotes that the object is moving with constant velocity.

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