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Physics (AS & A Level) · Oct / Nov 2023 · Paper 13 · Question 5

9702Equations of motion

A student walks at a constant speed for a distance of 50 m in a time of 40 s. The student rests for a time of 10 s and then walks back to the starting point at a constant speed in a time of 30 s. What is the distance–time graph for the motion of the student?

  1. AGraph A: distance rises to 50 m at 40 s, stays flat to 50 s, then falls to 0 at 80 s
  2. BGraph B: distance rises to 50 m at 40 s, stays flat to 50 s, then rises to 100 m at 80 s
  3. CGraph C: distance rises to 50 m at 40 s, stays flat to 50 s, then falls to 0 at 80 s
  4. DGraph D: distance rises to 50 m at 40 s, stays flat to 50 s, then rises to 100 m at 80 s

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Correct answer: D. Graph D: distance rises to 50 m at 40 s, stays flat to 50 s, then rises to 100 m at 80 s

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