Kinematics assorted problems

A set of assorted problems on kinematics graphs, requiring a knowledge of the following:

Phil starts a journey by walking to the west in a straight line for some distance. He then turns around and walks to the east in a straight line for some distance.

Based on this information, decide whether each graph below could represent Phil’s journey or could not represent his journey.

For example, your answers might start:
  • A could represent the journey
  • B could not represent the journey
  • C …

Further questions

  • Some of the graphs are meaningless. Which are they?
  • For each graph that could not represent Phil’s journey (apart from the meaningless graphs), come up with a description of a possible journey that does match the graph.