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Forces and Motion

Developing Essential Skills for State Standards

Forces: K-12 TLC Guide

Quests Quests
PAGE ONE
What Is Force? 		PAGE THREE
Mass and Inertia 		PAGE FOUR
Gravity 		PAGE FIVE
Friction 		PAGE SIX
Drag 		PAGE SEVEN
Erosion
Answer Sheet State Standards Quest Archive
PAGE TWO: Unbalanced Forces
  1. Read this information from the Utah Office of Education and answer the following questions:
    2.

    1. If you and a friend pull on opposite ends of the same rope with exactly the same amount of force, this is an example of:

        2. A.    Balanced forces.
        B.    Unbalanced forces.
        C.    Neither.
        D.    Both.

    2. If the forces on an object are unbalanced, the object:

        3. A.    Will remain at rest.
        B.    Will move.
        C.    Neither.
        D.    Both.

    3. When an object is at rest (motionless):

        4. A.    There are no forces acting upon it.
        B.    There are forces acting upon it, but they are balanced.
        C.    Because it is not moving, you can't tell if there are any forces acting on it.



  2. Look at this screen from the BBC and answer this question.
    3.

    1. If the horse on the cart is not moving, we know that forces on the horse and cart are:

        2. A.    Balanced.
        B.    Unbalanced.
        C.    Neither.
        D.    Both.



  3. Use this screen from the BBC to experiment pushing and pulling the horse and cart, and to take the quiz. Use your observations to answer these questions.
    4.

    1. A hard push moves the horse and cart farther than a soft push, because a hard push:

        2. A.    Creates more of a balance of forces on the horse and cart.
        B.    Unbalances the forces on the horse and cart more than a soft push.
        C.    Neither.
        D.    Both.

    2. The horse and cart move in the opposite direction of:

        3. A.    A push.
        B.    A pull.
        C.    Neither.
        D.    Both.

    3. The horse and cart move in the same direction:

        4. A.    They are pushed.
        B.    They are pulled.
        C.    Neither.
        D.    Both.

    4. The plastic cone did not stop the horse and cart because:

        5. A.    It did not balance the force moving the horse and cart.
        B.    It did balance the force moving the horse and cart.
        C.    Neither.
        D.    Both.

    5. The brick wall did stop the horse and cart because:

        6. A.    It did not balance the force moving the horse and cart.
        B.    It did balance the force moving the horse and cart.
        C.    Neither.
        D.    Both.

    6. When you open the drawer of a cabinet are you using a push or a pull?

        7. A.    Push.
        B.    Pull.
        C.    Neither.
        D.    Both.

    7. When you pedal a bicycle are you using a push or a pull?

        8. A.    Push.
        B.    Pull.
        C.    Neither.
        D.    Both.

    8. Which of these activities uses a twist?

        9. A.    Ringing a doorbell.
        B.    Unlocking a door with a key.
        C.    Bouncing a ball.
        D.    None of them.
        E.    All three.

    9. When you blow out the candles on a birthday cake, the force you are using is?

        10. A.    A Push.
        B.    A Twist.
        C.    Wind.
        D.    None of them.
        E.    All three.


TO PAGE ONE: What Is Force? TO PAGE THREE: Mass and Inertia
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This TLC Quest last edited 01/13/2007
This TLC Quest last revised 12/31/2006
This TLC Quest created 12/31/2006