Question Video: Representing Stationary Objects on a Distance–Time Graph Science

Which of the following distance–time graphs shows an object that does not move? [A] Option A [B] Option B [C] Option C

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Video Transcript

Which of the following distance–time graphs shows an object that does not move? Is it (A), (B), or (C)?

The graphs in the question are distance–time graphs. The horizontal axes of these graphs represent time values, and the vertical axes of these graphs represent values of distance. For an object not to move, it must not travel any distance in a time interval. The line of all three graphs starts at the origin of the axes. The origin of each graph represents a distance traveled of zero at a time of zero. Since we’re being asked which graph shows an object that does not move, we’re looking for the graph where the distance value doesn’t increase.

In option (A), we see a line that has a constant value on the vertical axis of the graph. In option (B) and option (C), we see lines that have different values on the vertical axes of the graphs for different values on the horizontal axes of the graphs. This means that only option (A) shows a graph that represents an object that has a constant position and so does not move.