Work, Speed, And Net Force

15 Questions | Total Attempts: 1504

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Work, Speed, And Net Force

Work = F x d Speed= d/t Net force= total forces acting on an object


Questions and Answers
  • 1. 
     A horse pulls a cart 25 meters with a force of 5 newtons? How much work was done?
    • A. 

      30 J

    • B. 

      5 J

    • C. 

      125 J

    • D. 

      20 J

  • 2. 
    A bird flies 36 meters in 9 seconds.  What is the speed of the bird?
    • A. 

      324 m/s

    • B. 

      4 m/s

    • C. 

      45 m/s

    • D. 

      27 m/s

  • 3. 
    What is the net force?
    • A. 

      70 N right

    • B. 

      1.4 N

    • C. 

      3 N right

    • D. 

      17 N left

  • 4. 
    A man carries a piece of wood with a weight of  80 pounds and walks forward 8 meters.  How much work was done?
    • A. 

      640 J

    • B. 

      88 J

    • C. 

      0 J

    • D. 

      10 J

  • 5. 
    What is the net force?
    • A. 

      15 N back

    • B. 

      8500 N

    • C. 

      185 N forward

    • D. 

      100 N back

  • 6. 
    A runner finishes a 150 meter race in only 15 seconds.   What was his speed?
    • A. 

      165 m/s

    • B. 

      10 m/s

    • C. 

      135 m/s

    • D. 

      2250 m/s

  • 7. 
    Is this an example of work?
    • A. 

      YES

    • B. 

      NO

  • 8. 
    What is the net force?
    • A. 

      Unbalanced

    • B. 

      0 N -- balanced

    • C. 

      200 N

    • D. 

      1000 J

  • 9. 
    A football player pushes another player forward 4 meters with a force of 100 N.  How much work was done?
    • A. 

      0 J

    • B. 

      94 N

    • C. 

      400 J

    • D. 

      25 J

  • 10. 
    What is the speed of a shark swimming 30 meters in 6 seconds?
    • A. 

      180 m/s

    • B. 

      5 m/s

    • C. 

      36 m/s

    • D. 

      24 m/s

  • 11. 
    A crane lifts up a load of rocks 2 meters with a force of  90 N.  How much work was done?
    • A. 

      45 J

    • B. 

      180 J

    • C. 

      92 J

    • D. 

      88 J

  • 12. 
    What is the speed of the boat traveling 60 meters in 10 seconds?
    • A. 

      6 m/s

    • B. 

      600 m/s

    • C. 

      70 m/s

    • D. 

      50 m/s

  • 13. 
    A large rock  is pushed with a force of 100 N, but does not move.  How much work was done?
    • A. 

      100 J

    • B. 

      0 J

  • 14. 
    What is the speed of a car moving 240 meters in 6 seconds?
    • A. 

      1440 m/s

    • B. 

      234 m/s

    • C. 

      246 m/s

    • D. 

      40 m/s

  • 15. 
    Students play tug of war.  Team A pulls East with a force of 250 N.  Team B pulls West with a force of 300 N.  What is the net force?
    • A. 

      50 N west

    • B. 

      300 N west

    • C. 

      Balanced forces

    • D. 

      0 N