Matter In Motion Test

34 Questions  I  By Webert
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Motion Quizzes & Trivia
Quiz to assess force and motion knowledge, as learned through the "Matter in Motion" lab.

  
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Questions and Answers

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  • 1. 
    Friction is a force that
    • A. 

      Opposes an object's motion.

    • B. 

      Does not exist when surfaces are very smooth.

    • C. 

      Decreases with larger mass.

    • D. 

      All of the above.


  • 2. 
    Rolling friction
    • A. 

      Is usually less than sliding friction.

    • B. 

      Makes it difficult to move objects on wheels.

    • C. 

      Is usually greater than sliding friction.

    • D. 

      Is the same as fluid friction.


  • 3. 
    A force
    • A. 

      Is expressed in newtons.

    • B. 

      Can cause an object to speed up, slow down, or change direction.

    • C. 

      Is a push or a pull.

    • D. 

      All of the above.


  • 4. 
    Which type of friction causes a sky diver's acceleration to change as she falls?
    • A. 

      Sliding

    • B. 

      Rolling

    • C. 

      Fluid

    • D. 

      Static


  • 5. 
    Two forces act on an object.  One force has a magnitude of 10N and is directed toward the north.  The other has a magnitude of 5N directed toward the south.  The object experiences a net force of
    • A. 

      5 N south

    • B. 

      15 N north

    • C. 

      50 N north

    • D. 

      5 N north


  • 6. 
    A reference point for determining position and motion could be
    • A. 

      The Earth's surface.

    • B. 

      A building.

    • C. 

      A moving object.

    • D. 

      All of the above.


  • 7. 
    The distance traveled divided by the time it took to travel that distance determines an object's
    • A. 

      Speed.

    • B. 

      Acceleration.

    • C. 

      Weight.

    • D. 

      Force.


  • 8. 
    You are in Chicago, IL.  You decide to head south to Austin, TX.  In one hour, you travel 80 km.  Your velocity is
    • A. 

      80:1

    • B. 

      80 km

    • C. 

      80 km/h

    • D. 

      80 km/h south


  • 9. 
    A car traveling 20 m/s south enters a new highway going east at 20 m/s.  The car has
    • A. 

      Decreased its distance.

    • B. 

      Changed its speed.

    • C. 

      Accelerated.

    • D. 

      Not changed its velocity.


  • 10. 
    Acceleration is a change in
    • A. 

      Speed.

    • B. 

      Velocity.

    • C. 

      Direction.

    • D. 

      All of the above.


  • 11. 
    When velocity decreases, this could be referred to as
    • A. 

      Acceleration.

    • B. 

      Deceleration.

    • C. 

      Negative acceleration.

    • D. 

      All of the above.


  • 12. 
    Which of the following is NOT an example of a force being exerted?
    • A. 

      Pushing a door open

    • B. 

      Typing on a computer keyboard

    • C. 

      Sitting in a chair

    • D. 

      None of the above


  • 13. 
    A friend is helping you to arrange your bedroom furniture.  You exert 25 N of force to push the foot-end of the bed while your friend exerts 20 N of force pulling on the head-end of the bed.  The net force being used to move the bed is
    • A. 

      5 N forward

    • B. 

      20 N forward

    • C. 

      25 N forward

    • D. 

      45 N forward


  • 14. 
    What is the net force when you combine a force of 7 N north with a force of 5 N south?
    • A. 

      2 N north

    • B. 

      2 N south

    • C. 

      12 N north

    • D. 

      12 N south


  • 15. 
    Balanced forces applied to an object
    • A. 

      Produce a net force of zero.

    • B. 

      Change the direction of a moving object.

    • C. 

      Cause an object at rest to start moving.

    • D. 

      Produce negative net force.


  • 16. 
    A good rule to observe when around a swimming pool is "no running."  The deck around the pool becomes very slippery to walk on when wet due to
    • A. 

      Sliding friction.

    • B. 

      Rolling friction.

    • C. 

      Fluid friction.

    • D. 

      Static friction.


  • 17. 
    One way to increase friction is to use
    • A. 

      Wax.

    • B. 

      Water.

    • C. 

      Sand.

    • D. 

      Oil.


  • 18. 
    The air that comes out of the tiny holes of an air-hockey table is an example of
    • A. 

      Net force.

    • B. 

      Friction.

    • C. 

      Gas lubricant.

    • D. 

      Liquid lubricant.


  • 19. 
    An object's velocity remain constant when its __________ do not change.
    • A. 

      Speed and direction

    • B. 

      Speed and time in motion

    • C. 

      Time in motion and direction

    • D. 

      Distance traveled and time in motion


  • 20. 
    Your class and another class have a tug-of-war contest.  For your class to win, your class must
    • A. 

      Create a balanced force with the other class.

    • B. 

      Have a greater force in the direction opposite the other class.

    • C. 

      Have a greater force in the same direction as the other class.

    • D. 

      Create a net force of zero with the other class.


  • 21. 
    You have made a house of cards on top of your table.  Suddenly, a gust of wind blows through an open window and your house of cards comes tumbling down.  The wind applied ______ to your house of cards.
    • A. 

      Friction

    • B. 

      A balanced force

    • C. 

      An unbalanced force

    • D. 

      A gravitational force


  • 22. 
    When applying brakes on a car or a bicycle, you are using _______ friction to stop.
    • A. 

      Sliding

    • B. 

      Rolling

    • C. 

      Fluid

    • D. 

      Static


  • 23. 
    _______________ opposes motion between surfaces that are touching. (Friction or Gravity)

  • 24. 
    Forces are expressed in _______________. (newtons or mass)

  • 25. 
    A _______________ is determined by combining forces. (net force or newton)

  • 26. 
    Any change in position over time is an example of _______________. (motion or acceleration)

  • 27. 
    The newton is the SI unit of _______________. (force or mass)

  • 28. 
    When observing an object in motion in relation to an object that appears to stay in place, the object that appears to stay in place is a _______________. (friction point or reference point)

  • 29. 
    Total distance divided by total time gives ab object's average _______________. (speed or acceleration)

  • 30. 
    The speed of an object in a particular direction is an object's _______________. (speed or velocity)

  • 31. 
    A push or a pull is a _______________. (friction or force)

  • 32. 
    When the net force on an object is not zero, the forces on the object are _______________. (unbalanced or balanced)

  • 33. 
    When a force is applied to an object but does NOT cause the object to move, _______________ occurs. (static friction or sliding friction)

  • 34. 
    _______________ are substances that are applied to surfaces in order to reduce the friction between them. (lubricants or friction)

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