2.2.12 Conservation Of Linear Momentum / Newton's 3rd Law

6 Questions | Total Attempts: 50

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Conservation Quizzes & Trivia

2. 2. 12 Conservation of linear momentum / Newton's 3rd Law


Questions and Answers
  • 1. 
    Which is the best wording to describe the conservation of momentum
    • A. 

      Momentum before a collision is the same as the momentum after the collision

    • B. 

      Momentum before a collision is the same as the momentum after the collision if there are no external forces

    • C. 

      The total momentum before a collision is equal to the total momentum after a collision

    • D. 

      The total momentum before a collision is equal to the total momentum after the collision if the total external forces acting upon the system is zero.

  • 2. 
    In explosion type collision, two static trolleys of masses 2Kg and 3Kg start to move apart (pushed by a spring between them),  What is the velocity of the first trolley if the 3Kg trolley moves with velocity 4m/s?
    • A. 

      3m/s

    • B. 

      -3 m/s

    • C. 

      4 m/s

    • D. 

      -4 m/s

    • E. 

      6 m/s

    • F. 

      -6 m/s

  • 3. 
    Why does a gangstah (note new spelling) not actually fly back through a glass window when he "takes" a bullet
    • A. 

      The bullet is travelling too fast

    • B. 

      He might will be wearing a bullet proof vest

    • C. 

      The total momentum before he is it is too small to make a significant change in his velocity

    • D. 

      The bullet gives all the momentum to the person that fired the bullet.

  • 4. 
    If the gangstah stands on the pavement, which are newton's third law pair of forces
    • A. 

      The gansta pushes down on the ground, and the ground pushes up on the gansta (reaction)

    • B. 

      The earth pulls down on the gangster, and the pavement pushes up on the ganster

    • C. 

      The ganster's mass pulls up on the earth, and the ground pushes up on the gangster.

  • 5. 
    According to newton's 3rd Law, If I push a car forward,
    • A. 

      The car will accelerate slowly

    • B. 

      The car will move at constant velocity

    • C. 

      The car will not move at all

    • D. 

      The car will push me back

    • E. 

      I have been taking too many high energy drinks.

  • 6. 
    Are there any parts of the conservation of momentum and Newton's 3rd Law that needs to be reviewed next lesson?  Can you formulate a question
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