Momentum & Impulse

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| By 11reefeg
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11reefeg
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Quizzes Created: 3 | Total Attempts: 9,187
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Momentum Quizzes & Trivia

Short quiz on momentum and impulse.


Questions and Answers
  • 1. 

    Momentum

    • A.

      Is the inertia of objects in motion

    • B.

      Depends on an object's velocity

    • C.

      Is a vector quantity

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Momentum is the property of an object in motion that describes its resistance to changes in velocity. It depends on an object's velocity, as a faster-moving object will have a greater momentum. Additionally, momentum is a vector quantity, meaning it has both magnitude and direction. Therefore, the correct answer is "all of the above" because all of the given statements accurately describe momentum.

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  • 2. 

    Which of the following probably has the largest momentum?

    • A.

      SUV speeding down the highway

    • B.

      Santa sliding slowly down the chimney

    • C.

      Centennial gym

    • D.

      Mack truck parked on the side of the road

    Correct Answer
    A. SUV speeding down the highway
    Explanation
    The SUV speeding down the highway probably has the largest momentum because momentum is directly proportional to an object's mass and velocity. The SUV is a large and heavy vehicle, and it is also moving at a high speed, which means it has a greater momentum compared to the other options. The other options either have low velocity (santa sliding slowly down the chimney) or are stationary (centennial gym and mack truck parked on the side of the road), resulting in lower momentum.

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  • 3. 

    It is correct ot say that impulse is equal to

    • A.

      Momentum

    • B.

      The force multiplied by the distance the force acts

    • C.

      The change in momentum

    • D.

      All of these

    Correct Answer
    C. The change in momentum
    Explanation
    Impulse is defined as the change in momentum of an object. Momentum is the product of an object's mass and velocity. Therefore, when a force is applied to an object for a certain amount of time, it causes a change in the object's momentum, resulting in impulse. Therefore, the correct answer is "the change in momentum" because impulse is indeed equal to the change in momentum.

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  • 4. 

    When a gun is fired the momentum of the the bullet

    • A.

      Is less than the momentum of the gun and in the same direction

    • B.

      Is greater than the momentum of the gun and in the opposite direction

    • C.

      Is equal to the momentum of the gun and in the opposite direction

    • D.

      Is equal to the momentum of the gun and in the same direction

    Correct Answer
    C. Is equal to the momentum of the gun and in the opposite direction
    Explanation
    When a gun is fired, the momentum of the bullet is equal to the momentum of the gun and in the opposite direction. This is due to the principle of conservation of momentum, which states that the total momentum of a system remains constant unless acted upon by an external force. As the bullet is propelled forward with a certain momentum, the gun experiences an equal and opposite momentum in order to conserve the total momentum of the system.

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  • 5. 

    Padded dash boards in cars are safer in an accident than non padded ones because an occupant hitting the dash has (CHECK ALL THAT APPLY)

    • A.

      Increased time of impact

    • B.

      Decreased impulse

    • C.

      Decreased impulse force

    • D.

      Decreased change in momentum

    • E.

      Decreased acceleration

    Correct Answer(s)
    A. Increased time of impact
    C. Decreased impulse force
    Explanation
    Padded dashboards in cars are safer in an accident because they provide an increased time of impact. This means that when an occupant hits the dashboard, the impact is spread out over a longer period of time, reducing the force exerted on the occupant's body. Additionally, padded dashboards also decrease the impulse force experienced by the occupant. This is because the padding absorbs some of the force and spreads it out, reducing the sudden change in momentum and acceleration that the occupant would experience without the padding.

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