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Kinematic Graphing Quiz

(2002-2003 School Year)

 

Use the equations below and your understanding of motion concepts to answer the following questions. Show all your work on calculations. Use complete sentences on explanations. Show units on answers and indicate the direction of all vectors.

ave. speed = distance/time
ave vel. = displacement/time
ave. accel'n = change velocity/time

1. If an object is moving in the positive direction and slowing down, then its velocity is ____________ and its acceleration is ____________.

a. positive, positive

b. positive, negative

c. negative, negative

d. negative, positive

e. positive, zero

f. negative, zero

2. The motions of five objects - A, B, C, D, and E - are represented by lines on a position-time graph. Write the letter(s) for any object which is speeding up. List all that apply.

 

3. Consider this position-time graph. Various time intervals are depicted by a letter. During which time interval(s) is the object accelerating? List all that apply.

4. The motions of five objects - A, B, C, D, and E - are represented by lines on a position-time graph. Write the letter(s) for any object which has a positive (and non-zero) velocity. If there is more than one answer, then list all that apply.

5. On the position-time graphs below, draw two lines/curves to represent the given verbal descriptions; clearly label the lines/curves as A or B.

A Moving in + direction

B Moving in - direction

A Speeding up

B Slowing down

A Moving at constant speed

B Accelerating

6. Use the position-time graphs below to determine the velocity of the object. PSYW

PSYW:

 

 

 

PSYW:

 

 

 

7. Renatta Oyle is driving rightward (+ direction) at 30 m/s when she suddenly slows down at a constant rate of acceleration to a rest position in 5 seconds.

a. Identify the direction of the acceleration of the car. ________________ Explain.

 

b. Construct a motion diagram (i.e., an "oil drop diagram") of the car's motion during this braking period.

c. Sketch a plot of position vs. time for the car's motion during this braking period. If the plot should be a straight line, make it clearly straight; if it should be curved, make it clearly curved and curved in the right direction; etc.

8. Merely be honest and describe something which has been helpful (if there is anything) in your efforts to learn and do well in physics. If nothing has been helpful, offer some suggestions on how something could be made more helpful.

 

 

 

Complaint Department:

9. Describe all complaints (if any) in the space below. Use a separate page if needed (ha).

 

 

 

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Last updated on 9/2/04.