01a Kinematika Grafik - Visualisasi Gerak

7/25/2019 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

01a Kinematika Grafik - Visualisasi Gerak

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