Exam 4 Target 1 #s 1-5

5 Questions | Total Attempts: 138

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Exam 4 Target 1 #s 1-5

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Questions and Answers
  • 1. 
    Which of the following sentences uses work in the scientific sense?
    • A. 

      Stan goes to work on the bus.

    • B. 

      Anne did work on the project for 5 hours.

    • C. 

      Joseph found that holding the banner in place was hard work.

    • D. 

      An engine does work on a car when the car is moving.

  • 2. 
    Work is done on an object
    • A. 

      Whenever a force acts on the object.

    • B. 

      Whenever a force is perpendicular to the displacement of the object.

    • C. 

      Whenever a force causes a displacement of the object.

    • D. 

      Whenever a net force acts on the object.

  • 3. 
    In which of the following cases is no work done?
    • A. 

      A. A weightlifter lifts a barbell.

    • B. 

      B. A weightlifter holds a barbell overhead.

    • C. 

      C. A weightlifter slowly lowers a barbell.

    • D. 

      D. A weightlifter drops a barbell and the barbell falls to the ground.

  • 4. 
    In which of the following sentences is work used in the scientific sense of the word?
    • A. 

      A. Holding a heavy box requires a lot of work.

    • B. 

      B. A scientist works on an experiment in the laboratory.

    • C. 

      C. Sam and Rachel pushed hard, but they could do no work on the car.

    • D. 

      D. John learned that shoveling snow is hard work.

  • 5. 
    In which of the following sentences is work used in the everyday sense of the word?
    • A. 

      A. Lifting a heavy bucket involves doing work on the bucket.

    • B. 

      B. The force of friction usually does negative work.

    • C. 

      C. Sam and Rachel worked hard pushing the car.

    • D. 

      D. Work is a physical quantity.

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