Exam 3 Preap Physics Numbers 11-15 2016

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  • 1/5 Questions

    15. In which situation is the net force acting on a car zero?

    • A. The car increases speed and changes direction.
    • B. The car increases speed but does not change direction.
    • C. The car maintains its speed but changes direction.
    • D. The car maintains both its speed and direction.
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Exam 3 Preap Physics Numbers 11-15 2016 - Quiz

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  • 2. 

    12. If a nonzero net force is acting on an object, then the object is definitely

    • A. at rest.

    • B. being accelerated.

    • C. moving with a constant velocity.

    • D. losing mass.

    Correct Answer
    A. B. being accelerated.
  • 3. 

    11.  When the net force acting on an object is 0 N, 

    • A. the object’s motion changes.

    • B. there are no forces acting on the object.

    • C. the forces acting on the object are balanced.

    • D. the forces acting on the object are unbalanced.

    Correct Answer
    A. C. the forces acting on the object are balanced.
  • 4. 

    13. Which statement about the acceleration of an object is correct? (Hint:  Use the equation.)

    • A. The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.

    • B. The acceleration of an object is directly proportional to the net external force acting on the object and directly proportional to the mass of the object.

    • C. The acceleration of an object is inversely proportional to the net external force acting on the object and inversely proportional to the mass of the object.

    • D. The acceleration of an object is inversely proportional to the net external force acting on the object and directly proportional to the mass of the object.

    Correct Answer
    A. A. The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.
  • 5. 

    14.  A truck and a car uniformly accelerate from rest to a velocity of 3.0 m/s in equal time intervals. The truck is ten times as massive as the car. Which of the following statements is correct?

    • A. The acceleration of the truck is 1/10 that of the car.

    • B. The truck travels 1/10 the distance of the car.

    • C. The force on the truck is 10 times the force on the car.

    • D. all of the above

    Correct Answer
    A. C. The force on the truck is 10 times the force on the car.

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  • Mar 19, 2022
    Quiz Edited by
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  • Sep 13, 2015
    Quiz Created by
    Sfduke
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