Representing Motion on Speed-Time Graphs – Question 1

The final frame of the movie on the last slide is shown below. It includes the speed-time graph for the yellow car.

Final frame showing the race with yellow car speed-time graph
Image showing red car to the right, yellow car in middle, and bicyle on the left.

Here are four possible graphs to choose from for the following questions:

Three speed-time graph
(A) medium slope, (B) steep slope, (C) low slope, (D) steep then flat.
Which of the graphs below do you think represents the motion of the bicycle?



Which of the graphs below do you think represents the motion of the Red Car?



As an additional check on your understanding,the next page shows the same movie on with all three graphs.