A3/A4/A6/B4/B6 - HW 1.3

15 Questions | Total Attempts: 195

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A3/A4/A6/B4/B6 - HW 1.3

Questions and Answers
  • 1. 
    A runner's position is 40 m at time t = 0 s. If he runs at a constant pace of 1.5 m/s, what will his position be at t = 45s? (Hint: Draw a graph to help!)
    • A. 

      67.5 meters

    • B. 

      107.5 meters

    • C. 

      40 meters

    • D. 

      106.5 meters

  • 2. 
    A runner's position is 20 m at time t = 0 s. If he runs at a constant pace of 0.5 m/s, what will his position be at t = 45s? (Hint: Draw a graph to help!)
    • A. 

      20 meters

    • B. 

      40.5 meters

    • C. 

      42.5 meters

    • D. 

      22.5 meters

  • 3. 
    Use the data below to answer the following question:  Is the velocity of the object constant? If so, what is the object's velocity?   Time (s) Position (m) 0.0               30 1.0               40 2.0               50 3.0               60 4.0               70 5.0               80
    • A. 

      Yes; +50 m/sec

    • B. 

      Yes; +30 m/sec

    • C. 

      Yes; + 10 m/sec

    • D. 

      Yes; +16 m/sec

    • E. 

      No

  • 4. 
    Use the data below to answer the following question: What is the starting position of the object?   Time (s) Position (m) 0.0               30 1.0               40 2.0               50 3.0               60 4.0               70 5.0               80
    • A. 

      0 meters

    • B. 

      +30 meters

    • C. 

      +15 meters

    • D. 

      -30 meters

    • E. 

      +80 meters

  • 5. 
    Use the data below to answer the following question: Write an equation for the objects position over time.   Time (s) Position (m) 0.0               30 1.0               40 2.0               50 3.0               60 4.0               70 5.0               80
    • A. 

      X = (+10 m/sec) (t) - 30 m

    • B. 

      X = (-10 m/sec) (t) + 30 m

    • C. 

      X = (-10 m/sec) (t) - 30 m

    • D. 

      X = (+10 m/sec) (t) + 30 m

    • E. 

      X = (10 m/sec) (t) + 30 m

  • 6. 
    Use the data below to answer the following question: Use your equation to solve for the objects position at time 15.0 s   Time (s) Position (m) 0.0               30 1.0               40 2.0               50 3.0               60 4.0               70 5.0               80
    • A. 

      +150 m

    • B. 

      +180 m

    • C. 

      -150 m

    • D. 

      - 180 m

    • E. 

      0 m

  • 7. 
    Use the graph below to answer questions 7-11 #7: What interval had the greatest velocity?
    • A. 

      2-5 sec

    • B. 

      5-7 sec

    • C. 

      7-12 sec

    • D. 

      12-14

  • 8. 
    Use the graph below to answer questions 7-11 #8: What interval had the most negative velocity?
    • A. 

      2-5 sec

    • B. 

      5-7 sec

    • C. 

      7-12 sec

    • D. 

      12-14

  • 9. 
    Use the graph below to answer questions 7-11 #9: Describe the motion of the vehicle at 10 seconds? 
    • A. 

      The vehicle is at a constant positive velocity and moving.

    • B. 

      The vehicle is at a constant negative velocity and moving.

    • C. 

      The vehicle is at a constant velocity and not moving.

    • D. 

      The vehicle is continually increasing in velocity.

  • 10. 
    Use the graph below to answer questions 7-11 #10: Describe the motion of the vehicle at 10 seconds? 
    • A. 

      The vehicle is at a constant positive velocity and moving.

    • B. 

      The vehicle is at a constant negative velocity and moving.

    • C. 

      The vehicle is at a constant velocity and not moving.

    • D. 

      The vehicle is continually increasing in velocity.

  • 11. 
    Use the graph below to answer questions 7-11 #11: Describe the motion of the vehicle at 2-5 seconds
    • A. 

      Velocity = +1 m/sec, traveling in the positive direction

    • B. 

      Velocity = -1 m/sec, traveling in the positive direction

    • C. 

      Velocity = +1 m/sec, traveling in the negative direction

    • D. 

      Velocity = -1 m/sec, traveling in the negative direction

  • 12. 
    Is this graph possible? Can it describe the motion for one vehicle in a single trial? Choose the best answer below.
    • A. 

      No, a vehicle can't be in the same position at the same value.

    • B. 

      No, a vehicle can't have different positions attached to different time values.

    • C. 

      Yes, a vehicle is able to have two positions at one time value

    • D. 

      Yes, a vehicle can have multiple positions (one or more) at one time value.

  • 13. 
    Use the following for questions 13-15 What happens when the lines above cross?
    • A. 

      CMV1 and CMV2 crash

    • B. 

      CMV1 and CMV2 have the same velocity

    • C. 

      CMV1 and CMV2 are at the same position from the origin

    • D. 

      CMV1 and CMV2 have moved the same total position

  • 14. 
    Use the following for questions 13-15 Which CMV has moved more position overall from 0-15 seconds?
    • A. 

      CMV1

    • B. 

      CMV2

    • C. 

      CMV1 and CMV2 are same

  • 15. 
    Use the following for questions 13-15 Which answer best supports your response in #14
    • A. 

      CMV2 is moving in the negative direction, and CMV1 is moving positive, so it has traveled further.

    • B. 

      CMV2 has changed more position over this time period than CMV1

    • C. 

      CMV1 has changed more position over this time period than CMV2

    • D. 

      CMV1 and CMV2 change the same amount of position

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