01a Kinematika Grafik - Visualisasi Gerak

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    FISIKA I(QUALITATIF) KINEMATIKA :DESKRIPSI GERAK DENGAN GRAFIK

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    VISUALISASI GERAK KINEMATIKA: GRAFIK

    Perhatikan gerak benda yang berlangsung secara konstan; jarak

    yang ditempuh tiap perubahan posisi sebanding dengan interval

    waktu tertentu yang sama (Gbr. atas). Posisi perubahan bendauntuk tiap waktunya bila diilustrasikan dapat dilihat pada Gambar

    kanan,

    http:whs.wsd.wednet.edu!acultybussemathhomepagebusseclassesapphysicsstudyguides"PPhysics#$%#&hapter%'#$%#&hapter%'#$%#.html

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    PENYAJIAN GERAK DENGAN GRAFIK

    http:whs.wsd.wednet.edu!acultybussemathhomepagebusseclassesapphysicsstudyguideschapter#chapter#studyguide#$$.html

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    http:demo.webassign.netebookscjdemopcc$#readmainc$#*#'+'re!.htm

    PENYAJIAN GERAK DENGANGRAFIK waktu posisiGRAFIK waktu kecepatan

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    ANALISA GERAK BERDASAR GRAFIK* (REVIEW: ERSA!AAN "!"! GARIS L"R"S#

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    Kecepatan tetap

    he straight line indicates

    constant velocity

    he slope o! the line !or a

    displacement vs time graph

    is the value o! the averagevelocity

    tvx =

    t

    x

    t

    x

    v =

    =

    graphtimevs.ofslope

    velocity

    x

    t

    xv

    =

    =

    =

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    Graf osisi ($# Waktu (t#

    he position-time graph shows

    the motion o! the particle (car)

    he smooth curve is a guess

    as to what happened between

    the data points

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    Ana%isis Kua%itati& Ge'ak paa G'a)k t $

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    Percepatan

    If the acceleration is

    constant, the velocitychanges linearly:

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    Gera !en"an Percepatan tetap

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    Ana%isis Kua%itati& Ge'ak paa G'a)k t

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    Interpreta#$ Graf: Ge'ak en-an pe'cepatantetap

    .x t#/! the time doubles what

    happens to the position0

    Position as a function of time:

    Velocity as a function of position:

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    In#tantane% Ve'%c$

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    Analisis Kualitatif Gerak yang lintasannya bukan garis lurus

    he slope o! the curve is the velocity he curved line indicates the velocity is

    changing here!ore, there is an acceleration

    he general e1uation !or instantaneous

    velocity is

    0limx

    t

    x dxv

    t dt

    = =

    I t t V l it d

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    Instantaneous Velocity and

    Speed

    he instantaneous velocity o! an object can be obtainedby taking the slope o! a graph o! the position componentvs. time at the point associated with that moment in time

    he instantaneous velocity can be obtained by taking aderivative with respect to time o! the object2s position.

    Instantaneous speed, which is typically called simply

    speed, is just the magnitude o! the instantaneousvelocity vector,

    0limtx dx dx

    v it dt dt

    = = =

    #'

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    2

    20lim x x

    xt

    v dv d xa

    t dt dt

    = = =

    he instantaneous acceleration is

    the limit o! the averageacceleration as tapproaches $

    3isplacement e1uals the

    area under the velocity 4

    time curve

    he limit o! the sum is a

    de!inite integral

    0lim ( )

    f

    in

    t

    xn n xtt

    n

    v t v t dt

    =

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    http:hyperphysics.phy-astr.gsu.eduhbasemechanicsmotgraph.html

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    /,e 0oat t'ae%s in a st'ai-,t %ine wit, t,eacce%e'ation esc'i0e 01 a2s -'ap,3 I& itsta'ts &'o4 'est5 const'uct a 2s -'ap, an

    ete'4ine t,e 0oat6s 4a$i4u4 spee3W,at istance s6 oes it t'ae% 0e&o'e itstops7

    http:www.chegg.comhomework-help1uestions-and-answersboat-travels-straight-line-acceleration-described-s-graph-starts-rest-construct-v-s-graph--1%5#66

    I& t,e ca' passes point A wit, a spee o& 894s an 0e-ins to inc'ease its spee at aconstant 'ate o& at; 93< 4s85 ete'4ine

    t,e4 a-nitue o& t,e ca'6s acce%e'ationw,en s ; =99 43