The figure shows the graph of the position x as a function of time for an object moving in the straight line (the x-axis).Which of the following graphs best describes the velocity along the x-axis as a function of time for this object?

Question

Quizplus · Accepted Answer

The slope of the position-time graph gives the velocity of the object. From the graph, we can see that the slope is constant for two intervals, which means the velocity is constant during those two intervals. Therefore, the graph of velocity vs time should be a horizontal line. The only option that shows a horizontal line is D.

The Figure Shows the Graph of the Position X as a Function