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Kinematic motionKinematic motionLINEAR AND CIRCULARLINEAR AND CIRCULAR
MOTIONMOTION
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Basic competence:Basic competence: Analyze physics quantities in rectilinear motion bothAnalyze physics quantities in rectilinear motion both
of no acceleration & constant accelerationof no acceleration & constant acceleration
Indicators:Indicators: Identify physic quantities of rectilinear motionIdentify physic quantities of rectilinear motion Analyze physic quantities of rectilinear motion withAnalyze physic quantities of rectilinear motion with
no accelerationno acceleration Analyze physic quantities of rectilinear motion withAnalyze physic quantities of rectilinear motion with
constant accelerationconstant acceleration Analyze the graphic of rectilinear motion with noAnalyze the graphic of rectilinear motion with no
acceleration and constant accelerationacceleration and constant acceleration
LINEAR MOTION
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MOTIONMOTION
LINEAR
CIRCULAR
UNIFOR
MMOTION
FAST
UNIFORMMOTION
SLOW
UNIFORMMOTION
UNIFOR
MMOTION
FAST
UNIFORMMOTION
SLOW
UNIFORMMOTION
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Parabolic functionParabolic function
Analyze the graph of Acceleratedmotion
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Y = axY = ax22 + bx + c+ bx + c
yy
xx
Analyze the graph of Acceleratedmotion
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s = ats = at22 + bt + c+ bt + c
ss
tt
Graph displacement againts timeGraph displacement againts time
Analyze the graph of Acceleratedmotion
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S = u.t + .atS = u.t + .at22
With:With:
S=displacement (perpindahan)S=displacement (perpindahan)
u = initial velocity (kecepatan awal)u = initial velocity (kecepatan awal)
a =acceleration (percepatan)a =acceleration (percepatan)
t = timet = time (waktu)(waktu)
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ExampleExample
A train travelling at 20 m/s acceleratesA train travelling at 20 m/s accelerates
at 0.5 m/sat 0.5 m/s22 for 30 seconds. How far willfor 30 seconds. How far will
it travel in this time?it travel in this time?
S=S= u.t + .atu.t + .at22
S=S= 20.30 + (0.5)(30)20.30 + (0.5)(30)22
S= 600 + 225 = 825 mS= 600 + 225 = 825 m
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Linear function: y = mx + cLinear function: y = mx + c
yy
xx
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Graph velocity againts timeGraph velocity againts time
Velocity function: v = u + atVelocity function: v = u + at
vv
tt
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Velocity function: v = u + atVelocity function: v = u + at
With:With: With:With: u = initial velocity (kecepatan awal)u = initial velocity (kecepatan awal)
V = final velocity (kecepatan akhir)V = final velocity (kecepatan akhir) a =acceleration (percepatan)a =acceleration (percepatan) t = timet = time (waktu)(waktu)
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ExampleExample
A car is initially stationary. It movesA car is initially stationary. It moves
with acceleration 2 m/swith acceleration 2 m/s22. How fast will. How fast will
it be moving after 10 seconds?it be moving after 10 seconds?
V = u + a.tV = u + a.t
V = 0 + 2.10V = 0 + 2.10 V = 20 m/sV = 20 m/s
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Fast and slow uniformly motionFast and slow uniformly motion
S=displacement (perpindahan)S=displacement (perpindahan) u = initial velocity (kecepatan awal)u = initial velocity (kecepatan awal) V = final velocity (kecepatan akhir)V = final velocity (kecepatan akhir) a =acceleration (percepatan)a =acceleration (percepatan) t = timet = time (waktu)(waktu)
S = u.t + .atS = u.t + .at22
v = u + atv = u + at
vv22 u u22 = 2as= 2as
S = u.t - .atS = u.t - .at22
v = u - atv = u - at
vv22 u u22 = - 2as= - 2as
SLOWFAST
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ContohContoh
Sebuah kelereng dilempar vertikal keSebuah kelereng dilempar vertikal keatas dengan kecepatan 20 m/s.atas dengan kecepatan 20 m/s.Tentukan kecepatan dan ketinggianTentukan kecepatan dan ketinggian
kelereng setelah 1 detik.kelereng setelah 1 detik. Diketahui: u=20 m/sDiketahui: u=20 m/s g = 10 m/sg = 10 m/s22
t = 1 st = 1 s
Ditanya: v dan hDitanya: v dan hJawab:Jawab:
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CIRCULAR MOTIONCIRCULAR MOTION
Basic competence:Basic competence: 2.2 Analyze physics quantities in2.2 Analyze physics quantities incircular motion withcircular motion with
constant speedconstant speed
Indicators:Indicators:
Identify the frequency, period, and angular displacement inIdentify the frequency, period, and angular displacement incircular motion with constant speedcircular motion with constant speed
Analyze physics quantities & its relationship betweenAnalyze physics quantities & its relationship betweenrectilinear motion & circular motion with constant speedrectilinear motion & circular motion with constant speed
Apply the physics quantities in joining wheels systemApply the physics quantities in joining wheels system ObjectivesObjectives Can define and apply the concepts of kinematics in circularCan define and apply the concepts of kinematics in circular
motionmotion
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Angular displacementAngular displacement
Angular position is symbolyzed byAngular position is symbolyzed by and the unit is degree or radianand the unit is degree or radian
I rotation is 360I rotation is 36000
or 2 radianor 2 radian which easily simplifies to = 2.which easily simplifies to = 2.
Therefore 1 revolution is 2 radians.Therefore 1 revolution is 2 radians.
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= = 22 11
which equals the Angularwhich equals the Angular
Displacement.Displacement.
Angular displacementAngular displacement
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Example
Change the units into radian
1. 300
2. 1200
3. 1/6 rotation
Change the units into degree
1. radian 2. 4 /3 radian
3. rotation
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Angular velocityAngular velocity
== / t/ t
: angular velocity (rad/s): angular velocity (rad/s) : angular displacement (rad): angular displacement (rad)
t : time (s)t : time (s)
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Linear displacementLinear displacement
S : linear displacement(m)
r : radius (m)
: angulardisplacement(rad)
v : linear velocity (m/s)
r : radius (m)
: angular velocity (rad/s)r
v=
Linear velocity
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Period and FrequencyPeriod and Frequency
T = t / n and f = n / t
Where is:
T = Periods
f = frequency
n = number of rotationt = time elapsed
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Joining Wheel systemJoining Wheel system
21 =
2
2
1
1
r
v
r
v
=
Same axis
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Joining Wheel systemJoining Wheel system
2211.. rr =
21 vv=
Side byside
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Joining Wheel systemJoining Wheel system
21vv =
2211
.. rr =
Joining with chain
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ANNOUNCEMENTANNOUNCEMENT
Next meeting: Daily test-3Next meeting: Daily test-3
Materials : Kinematic motionMaterials : Kinematic motion
(linear and circular motion)(linear and circular motion)
Test Preparation Sheet will be shown in myTest Preparation Sheet will be shown in my
blogsoonblogsoon
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Jadwal remedial (pulang sekolah)Jadwal remedial (pulang sekolah)
Selasa/ 27 okt: kelas 10.6 dan 10.9Selasa/ 27 okt: kelas 10.6 dan 10.9 Rabu/ 28 okt: kelas 10.5 dan 10.1Rabu/ 28 okt: kelas 10.5 dan 10.1 kamis/ 29 okt: kelas 10.4, 10.2 dankamis/ 29 okt: kelas 10.4, 10.2 dan
10.810.8 Sabtu/ 31 okt: kelas 10.3 dan 10.7Sabtu/ 31 okt: kelas 10.3 dan 10.7
Ruang: Multimedia 1Ruang: Multimedia 1 Materi yg diujikan: Materi UH-1 danMateri yg diujikan: Materi UH-1 dan
Mid testMid test