Unit 6 Wkst 4 Answer Key Rev

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  • 5/19/2018 Unit 6 Wkst 4 Answer Key Rev

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    \~ j1:::3S 4 Quantitative Bar Graphs and Problems

    t t : : : ~ ~ (5) ~~~~~he system you choose to analyze.

    Assume the systems to be frictionless unless stat

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    2. Complete the energy bar graph QUANTITATIVELY numerically accurate).

    3. In the space below each diagram use conservation of energy equations to solve for the quantity called for in the questi

    1. A moving cart hits a spring, traveling at 5.0 m/s at the time of contact. At the instant the cart is

    motionless, by how much is the spring compressed?

    Initial

    EK Eg Eel

    t r .

    8 0 tg

    y

    5 0 mls

    t 50 N

    v= 0

    Energy Flow

    Diagram

    X

    I

    k

    100l

    m

    ffi{

    0 30

    mA

    /j

    Initial

    o L

    Fina

    Initial

    K g el

    Energy Flow

    Diagram

    Final

    EK Eg Eel Ein

    _ : : : : : : : : : ~ J : : :

    f f r .

    . / 1

    ~

    o tb====:i::::::==

    Final

    K g el in t

    : : : : : ~ : : : : : : :

    ~ ~

    o

    r:::::===,,=====

    Modeling Workshop Project 2006

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    4. The bullet strikes a block of wood which exerts, on average, a force of 50,000N opposing the motio

    of the bullet. How far does the bullet penetrate?

    Initial

    K

    g

    e l

    25 g

    5 m s

    0

    Energy Flow

    Diagram

    _ _ L

    Initial Fina

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    Final

    K g e l i n t

    011:========

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    Modeling Workshop Project 2006

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    Unit VII ws3b v3.0