Ch. 2: Kinematic Graphing: Concept Checker

The two labeled lines on this velocity-time graph represents the motion of objects A and B. How is the motion of object A different than the motion of object B?

• Object A is slowing down (getting slower) and object B is speeding up (getting faster).

• Object A is speeding up (getting faster) and object B is slowing down (getting slower).

• Object A is moving in the - (negative direction, left) and Object B is moving in the + (positive direction, right).

• Object A is moving in the + direction (positive, right) and Object B is moving in the - direction (negative, left).

If the position-time graph for a motion is curved, what can be said about the motion of the object?

• The object is speeding up (getting faster).

• The object is slowing down (getting slower).

• The object is changing its speed.

• The object is moving with constant speed.

The four labeled lines on the velocity-time graph represent the motion of objects A, B, C, and D.

Which two objects are moving with the lowest speed (i.e., slowest)? Select two answers.

• A

• B

• C

• D

Consider these four position-time graphs.

Identify the letters of the two graphs that represent an object that is slowing down.

• A

• B

• C

• D

If the line on a velocity-time graph is located below the time axis, what can one say for certain about the motion?

• The object is moving with a negative acceleraton.

• The object is speeding up (getting faster) as it moves.

• The object is slowing down (getting slower) as it moves.

• The object is moving in the negative direction

The two labeled lines on this position-time graph represents the motion of the objects A and B.

How is the motion of object A different than the motion of object B?

• Object A is moving fast and Object B is moving slow.

• Object A is speeding up and Object B is slowing down.

• Object A has a constant speed and Object B has a changing speed.

• Object A is moving in a straight line; Object B is changing its direction.

The four labeled lines on the acceleration-time graph represent the motion of the object A, B, C, and D.

Which of these objects are moving in the positive (+) direction?

• Objects C and D are moving in the + direction.

• Objects A and D are moving in the + direction.

• Object B and C are moving in the + direction.

• Objects A and B are moving in the + direction.

• Nonsense! Such information cannot be determined from an a-t graph.

The position-time graph at the right represents the motion of an object. What would the velocity-time graph look like for this object?

• 
• 
• 
•