Book M Ch 2 Test

29 Questions

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Book M Ch 2 Test

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Questions and Answers
  • 1. 
    Who was the scientist who gave us the Laws of Motion?
    • A. 

      Bill Nye

    • B. 

      Aristotle

    • C. 

      Sir Isaac Newton

    • D. 

      Fig Newton

  • 2. 
    How many Laws of Motion are there?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 3. 
    What is another name for the first law of motion?
    • A. 

      Law of inertia

    • B. 

      Action/reaction

    • C. 

      Accleration=Net force/mass

  • 4. 
    Which law explains why we need to wear seatbelts?
    • A. 

      1st

    • B. 

      2nd

    • C. 

      3rd

  • 5. 
    Which law says that force is equal to mass times acceleration (Fnet=MA)?
    • A. 

      1st

    • B. 

      2nd

    • C. 

      3rd

  • 6. 
    Which law says that heavier objects require more force than lighter objects to move or accelerate?
    • A. 

      1st

    • B. 

      2nd

    • C. 

      3rd

  • 7. 
    Which law explains how rockets are launched into space?
    • A. 

      1st

    • B. 

      2nd

    • C. 

      3rd

  • 8. 
    Which law says for every action there is an equal but opposite reaction?
    • A. 

      1st

    • B. 

      2nd

    • C. 

      3rd

  • 9. 
    An object with a mass of 10 kg has a force exerted on it of 200 N. What is it's acceleration? ______ m/s squared. 
  • 10. 
    What is the force needed to accelerate a 200 kg object to 40 m/s squared? _____ N
  • 11. 
    The speed an object reaches when the  force of gravity is balanced by the force of air resistance is called ____.
    • A. 

      Acceleration

    • B. 

      Terminal velocity

    • C. 

      Velocity

  • 12. 
    You hit a wall with a stick.  The equal but opposite is
    • A. 

      The wall pushes against you

    • B. 

      The wall pushes against the stick

    • C. 

      You push against the stick

    • D. 

      The stick pushes against you

  • 13. 
    The time for an action-reaction situation is
    • A. 

      Instantaneous

    • B. 

      At least 5 seconds

  • 14. 
    Which type of friction slows down an object that slides?
    • A. 

      Sliding

    • B. 

      Rolling

    • C. 

      Static

  • 15. 
    The force of ___ exists between any two objects that have mass. 
    • A. 

      Acceleration

    • B. 

      Gravity

  • 16. 
    The gravitational force of any object near Earth's surface ____
    • A. 

      Is unknown

    • B. 

      Depends on the objects mass

    • C. 

      9.8 m/s squared

  • 17. 
    If a net force acts at an angle to the direction an object is moving, the object will follow a(n) ____ path.
    • A. 

      Curved

    • B. 

      Straight

    • C. 

      Unknown

    • D. 

      Straight downward

  • 18. 
    A force is a push or a pull
    • A. 

      True

    • B. 

      False

  • 19. 
    Rolling friction keeps an object at rest.
    • A. 

      True

    • B. 

      False

  • 20. 
    Momentum is an unbalanced force that stops almost everything.
    • A. 

      True

    • B. 

      False

  • 21. 
    A net force on an ovject changes the objects motion.
    • A. 

      True

    • B. 

      False

  • 22. 
    A force in the opposite direction to the motion of the object will cause the object to speed up.
    • A. 

      True

    • B. 

      False

  • 23. 
    If an object is at rest, all forces acting on that object must be balanced. 
    • A. 

      True

    • B. 

      False

  • 24. 
    Static friction enables you to ride a bike without skidding and falling.
    • A. 

      True

    • B. 

      False

  • 25. 
    Applying the brakes uses sliding friction to slow the vehicle down. 
    • A. 

      True

    • B. 

      False

  • 26. 
    Normal force is the rubbing force that acts against the motion between two touching surfaces.
    • A. 

      True

    • B. 

      False

  • 27. 
    If the forces acting on an object are unbalanced, the net force is not zero. 
    • A. 

      True

    • B. 

      False

  • 28. 
    The tendency of an object to remain at rest is called inertia.
    • A. 

      True

    • B. 

      False

  • 29. 
    The density of an object that is 640 grams and 32cm3 is _____ g/cm3