The top graph in the figure below shows position vs time of an athlete performing a shuttle run (i.e. forwards and backwards). Which of the four graphs below this (a - d) is most likely to represent the athlete's velocity vs time for the same movement?

Question

Quizplus · Accepted Answer

The athlete first moves forwards, thus has a positive velocity. They then stop momentarily whilst they change direction (i.e. the velocity passes through zero), before becoming negative and they run in the opposite direction before returning to the starting position.

The Top Graph in the Figure Below Shows Position Vs