2,3 / 2,4 Reading Quiz - Work Done, PE Ke, Power, Circular Motion

10 Questions | Total Attempts: 82

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2,3 / 2,4 Reading Quiz - Work Done, PE Ke, Power, Circular Motion - Quiz

2,3 / 2,4 Reading Quiz - work done, PE KE, power, circular motion


Questions and Answers
  • 1. 
    Which areas of this work done, KE, PE, power and circular motion do you have the most difficult with?  Can you formulate a question?
  • 2. 
    20N pushes a box 6m in 3 seconds. What is the work done by the force?
    • A. 

      360J

    • B. 

      120J

    • C. 

      60J

    • D. 

      18J

  • 3. 
    What is the average power used in moving an object with 20N for a distance of 6m in 3seconds?
    • A. 

      3.33W

    • B. 

      2W

    • C. 

      6.66W

    • D. 

      40W

  • 4. 
    What aspect of a force distance graph give you the work done?
    • A. 

      The gradient,

    • B. 

      The area

    • C. 

      Half the area

    • D. 

      The second derivative

  • 5. 
    2Kg mass is thrown with a velocity of 5m/s.  What is its KE?
    • A. 

      5J

    • B. 

      10J

    • C. 

      25J

    • D. 

      50J

  • 6. 
    A 2Kg mass is given 100J of KE.  How high will it reach if it is thrown vertically upwards?
    • A. 

      2.5m

    • B. 

      5m

    • C. 

      25m

    • D. 

      50m

  • 7. 
    What is an elastic collision?
    • A. 

      Where momentum is conserved

    • B. 

      Where energy is conserved

    • C. 

      Where kinetic energy is conserved

    • D. 

      Where potential energy is conserved

  • 8. 
    A speed boat is able to travel with a maximum velocity of 20m/s.  The power rating of the engine is 2000W.  What is the sum of the frictional forces on the boat?
    • A. 

      40,000 N

    • B. 

      200 N

    • C. 

      100 N

    • D. 

      50 N

  • 9. 
    What is the acceleration of a 40Kg boy sitting on the edge of a merry-go-round.  The tangetial speed is 2m/s.  The diameter of the merry go round is 8m.  What is the acceleration he experiences.
    • A. 

      0.5 m/s2

    • B. 

      1m/s2

    • C. 

      2m/s2

    • D. 

      4m/s2

  • 10. 
    When a bucket is being swung round in a circle in a verticle plane, what are the forces acting on the bucket when it is at the lowest point?
    • A. 

      Weight and centripetal force,

    • B. 

      Tension and centripetal force and weight

    • C. 

      Weight and tension

    • D. 

      Tension and centripetal force

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