Five motion diagrams in which points represent the positions of an object at equal time intervals are shown below.Which statement is correct?
A)A has the greatest speed and the greatest acceleration.
B)C has decreasing speed.
C)D slows down and then speeds up.
D)D speeds up and then slows down.
E)E has a greater speed than A.

Question

Five motion diagrams in which points represent the positions of an object at equal time intervals are shown below.Which statement is correct? 
A)A has the greatest speed and the greatest acceleration. 
B)C has decreasing speed. 
C)D slows down and then speeds up. 
D)D speeds up and then slows down. 
E)E has a greater speed than A.

Quizplus · Accepted Answer

The motion diagram for D shows that the points are getting farther apart, indicating increasing speed, followed by getting closer together, indicating decreasing speed. This means that D speeds up and then slows down.

Five Motion Diagrams in Which Points Represent the Positions of an Object