JQuiz Instructions

1. Describe the graph of a direct proportion.

   1.   ?    straight line through the origin
   2.   ?    parabola
   3.   ?    hyperbola
   4.   ?    horizontal line

2. Describe the graph of an inverse proportion.

   1.   ?    straight line through the origin
   2.   ?    parabola
   3.   ?    hyperbola
   4.   ?    horizontal line

3. y = kx is the equation for:

   1.   ?    an inverse proportion
   2.   ?    a direct proportion
   3.   ?    an independence relation

4. k = xy is the equation for:

   1.   ?    an inverse proportion
   2.   ?    a direct proportion
   3.   ?    an independence relation

5. What does the graph of an independence relation look like?

   1.   ?    a straight line through the origin
   2.   ?    a parabola
   3.   ?    a hyperbola
   4.   ?    a horizontal line

6. How is momentum related to velocity?

   1.   ?    directly
   2.   ?    inversely
   3.   ?    independent

7. The force exerted by actor A on actor B is exactly equal to the force exerted by actor B on actor A in magnitude and opposite in direction.

   1.   ?    Newton's First Law
   2.   ?    Newton's Second Law
   3.   ?    Newton's Third Law

8. The acceleration experienced by an object is directly proportional to the net force against it and inversely proportional to its own mass.

   1.   ?    Newton's First Law
   2.   ?    Newton's Second Law
   3.   ?    Newton's Third Law

9. An object will not accelerate unless acted upon by a net force.

   1.   ?    Newton's First Law
   2.   ?    Newton's Second Law
   3.   ?    Newton's Third Law

10. The rate of change of momentum is "force"

    1.   ?    Newton's First Law
    2.   ?    Newton's Second Law
    3.   ?    Newton's Third Law

11. Inertia is a property of mass.

    1.   ?    Newton's First Law
    2.   ?    Newton's Second Law
    3.   ?    Newton's Third Law

12. An object moves in a circle because of centripetal force. In what direction is any centripetal force directed?

    1.   ?    Towards the center of the circle
    2.   ?    Tangent to the circle
    3.   ?    Away from the center of a circle

13. An object moving in a circle suddenly loses its centripetal force. In what direction does it now move?

    1.   ?    Towards the center
    2.   ?    Tangent to the circle
    3.   ?    Away from the center
    4.   ?    It stops

14. What does centripetal force act on during the spin cycle of laundry?

    
    
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15. What does centripetal force most importantly not work on during the spin cycle?

    1.   ?    clothing
    2.   ?    water
    3.   ?    suds

16. According to the law of universal gravitation -- the gravity force between them is equal to the product of:

    1.   ?    their masses
    2.   ?    their masses and the distance between
    3.   ?    their masses and the square of the distance between

17. According to the law of universal gravitation, the force between two objects is inversely proportional to:

    1.   ?    the product of their masses
    2.   ?    the distance between
    3.   ?    the square of the distance between

18. Describe the path of the center of mass of any object propelled tumbling through the air.

    1.   ?    a straight line
    2.   ?    a wobbly curve
    3.   ?    a parabola
    4.   ?    a hyperbola

19. What has more rotational inertia -- a solid disk, like a can of tomato soup or a thin ring of solid metal (given the two have equal mass)?

    1.   ?    the ring
    2.   ?    the disk

20. What wins a race down an inclined plane -- a disk or a ring?

    1.   ?    disk
    2.   ?    ring