The graph below shows the speed of an object through time.

Question

Which of the following scenarios describes an object whose motion could be represented by the graph above?
A.
A runner slows from his top speed of 5.5 m/s to a final speed of 0.0 m/s over 5.0 seconds.
B.
A book sits on a motionless desk for a period of 5.0 seconds.
C.
A sled starts from rest and then slides down a hill, reaching 55 m/s after 5.0 seconds.
D.
A heavy couch is pushed along the floor at a constant speed of 55 cm/s for 5.0 seconds.

Answer 1

C.
A sled starts from rest and then slides down a hill, reaching 55 m/s after 5.0 seconds.