teacher's copy module 1

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PHYSIC

FORM 4

MODULE 1

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INTRODUCTION TO PHYSICS & FORCES AND MOTION

KEMENTERIAN PELAJARAN MALAYSIA


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MODULE 1: INTRODUCTION TO PHYSICS & FORCES AND MOTIONArahan Kepada Guru:

1. Modul ini mengandungi tiga puluh soalan.

2. Modul merangkumi enam konstruk yang diuji

K1 - Memahami soalan dalam Bahasa Inggeris

K3 - Memahami istilah matematik dalam bahasa Inggeris

K5 - Menguasai konstruk pengetahuan

K6 - Menguasai konstruk kefahaman

K7 - Menguasai konstruk kemahiran

K8 - Mengungkapkan idea/informasi dalam bahasa Inggeris

3. Guru hendaklah memastikan murid menulis maklumat diri dalam kertas jawapan objektif yang disediakan.

4. Guru memastikan murid menghitamkan pilihan jawapan (objektif) pada kertas jawapan objektif yang disediakan

5. Guru hendaklah menyediakan kertas jawapan (subjektif) yang berasingan bagi soalan 28 hingga soalan 30.

6. Guru hendaklah menanda jawapan murid diakhir ujian dan merekod jumlah bilangan soalan salah bagi setiap konstruk di

kertas jawapan objektif (OMR) murid. Guru dikehendaki mengumpul kertas jawapan objektif (OMR) semua murid mengikut

kelas masing-masing dan mengikut arahan selanjutnya seperti di dalam manual prosedur pengendalian ujian diagnostik.

Modul ini mengandungi 28 halaman bercetak


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MODULE SUMMARY

PHYSIC FORM 4 - INTRODUCTION TO PHYSICS & FORCES AND MOTION

Konstruk Penerangan konstruk No. SoalanJumlahSoalan

Bil soalan gagal dijawab(untuk pemulihan)

sekurang-kurangnya

K1 Memahami soalan dalam bahasa Inggeris 1, 2, 3, 4, 5, 5 3

K3 Memahami istilah sains dalam bahasa Inggeris 6, 7, 8, 9, 10 5 3

K5 Menguasai konstruk pengetahuan 11, 12, 13, 14, 15 5 3

K6 Menguasai konstruk kefahaman 16, 17, 18, 19, 20 5 3

K7 Menguasai konstruk kemahiran 21, 22, 23, 24, 25, 26, 27 7 5

K8Mengeluarkan maklumat / idea dalam BahasaInggeris

28, 29, 30 3 2

JUMLAH 30


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SOALAN

MASALAH YANG DIHADAPI OLEH

PELAJAR DAN CADANGANPEMULIHAN

1. The speed of trolley X is 3 ms-1. The speed of trolley Y is 2 ms-1, which is 1 ms-1less than the speed of trolley X.

What are the speeds of trolley X and trolley Y?

Speed of trolley X / ms-1 Speed of trolley Y / ms-1

A 3 2

B 3 1

C 2 1

D 1 3

Jawapan: A

Kelemahan

Tidak memahami maksud less than.

PemulihanMenerangkan penggunaan perkataanperbandingan seperti more than,less than, equal to.


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2. The figure shows a displacement time graph of an object. The object is

moving with constant displacement.

What is the physical quantity that remains constant?

A TimeB DisplacementC Time and displacement

Jawapan: B

KelemahanTidak memahami maksudphysicalquantitydan constant.

Pemulihanmenerangkan maksudphysical

quantitydan constant.

displacement / m

time / s


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3. The inertia of an object depends on its mass but does not depend on its weight

or velocity.

What does the inertia of an object depend on?

A MassB WeightC VelocityD Weight and velocity

Jawapan: A

KelemahanTidak baca soalan dengan teliti.

PemulihanGuru menerangkan semula maksudsoalan.

4. Scalar quantities are quantities that have magnitude but no direction. Vectorquantities are quantities that have both magnitude and direction.

A scalar quantity is a quantity that

A has direction only.B has magnitude only.C has magnitude and directionD has no magnitude and no direction

Jawapan: B


PemulihanMeminta pelajar membaca semulasoalan dengan teliti.


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5. An object with a mass of 5 kg is moving with a momentum of 20 kg ms- . After 3seconds, its displacement is 10 m.

What is the momentum of the object?

A 3 sB 5 kgC 10 mD 20 kg ms-1

Jawapan: D


PemulihanGuru menerangkan semula maksudsoalan.


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6.

Questions 6 and 7 refer to the table below.

The table shows the results of an experiment carried out to investigate therelationship between force, Fapplied on a spring,xand the extension of thespring.

Force, F/ N Extension of spring,x/cm

0.51.01.52.02.5

2.04.06.08.010.0

In this experiment,

force, Fis the

A fixed variable.B responding variable.C manipulated variable.

Jawapan: C

KelemahanTidak memahami dan membezaantara variables.

PemulihanGuru menerangkan semula caramengenalpasti variables denagnmemberi lebih banyak contoh.


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7. extension of a spring is a

A fixed variable.B responding variable.C manipulated variable.

Jawapan: B

KelemahanTidak memahami dan membezaantara variables.

PemulihanSeperti dalam pemulihan soalan 6.


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8.

Questions 8 to 10 refer to the figures below.

Choose the terminology that best relates to each situation shown in the figurebelow.

The figure shows a car moving towards a traffic light.

A Acceleration

B DecelerationC Constant velocity

Jawapan: B

KelemahanTidak dapat memahami deceleration.Tidak dapat hubungkait rajah denganistilah.

PemulihanPenekanan kepada konsepacceleration dan deceleration.

u= 20 ms- v = 0 ms-


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9.

A InertiaB PressureC ElasticityD Balanced forces

Jawapan: A

KelemahanTidak dapat memahami istilah inertia.Tidak dapat hubungkait situasidengan istilah.

PemulihanMemberi contoh-contoh lain yangmelibatkan inertia.


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10.

A InertiaB ExplosionC Elastic collisionD Inelastic collision

Jawapan: D

KelemahanTidak dapat menguasai istilahcollision.Tidak dapat membeza jenis-jeniscollision.

PemulihanMengguna simulasi komputer untukmenerangkan jenis-jenis collision.

Before After


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11. The figure shows the velocity time graph of an object.

Which section of the graph shows an acceleration?

A OAB OCC AB

D BC

Jawapan: A

KelemahanTidak memahami konsep asasacceleration daripada velocity-timegraph yang diberi.

Pemulihan

Menerangkan hubungkaitacceleration dan distance traveleddari motion graph.

O C

BA

v/ ms-1

t/ s


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12. All the forces acting on an object are balanced. What is the type of motion ofthe object?

A The object accelerates.B The object decelerates.C The object moves with constant velocity.D The object moves with increasing velocity.

Jawapan: C

KelemahanTidak memahami konsep balancedforce.

PemulihanMengulangi maksud balanced force

dan kesannya ke atas pergerakansuatu objek.

13. Which quantity in the table below is correctly matched with its unit?

Quantity Unit

A acceleration ms-2

B speed ms

C velocity ms2

D displacement s

Jawapan: A

KelemahanTidak dapat mengenalpasti unit yangsepadan dengan kuantiti yang diberi.

PemulihanPastikan pelajar mengingati unit-unitbagi kuantiti-kuantiti fizik yang diajar.


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14. Momentum is defined as

A mass x velocityB mass x (velocity)2C mass x accelerationD mass x displacement

Jawapan: A

KelemahanTidak mengetahui definisimomentum.

PemulihanMengulangi dan memperbanyakkan

hafalan definisi.

15. The figure shows a man tightening the head of a hammer by hitting the bottomof the handle against a hard surface.

The head of the hammer is tightened, due to the concept of

A powerB inertiaC elasticityD pressure

Jawapan: B

KelemahanTidak mengetahui konsep inertia.

PemulihanMengulangi konsep inertia danmemberi lebih banyak contoh.handle

hard surface

head of hammer


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16. The figure shows a child and his mother sitting on two identical swings.

They are pushed with the same amount of forces.

The swing which the mother sits on is more difficult to be moved because

she has

A greater inertia.B smaller inertia.C greater momentum.D lower mass and larger inertia

Jawapan: A

KelemahanTidak memahami konsep inertia,serta hubungan antara inertia danmass.

Pemulihan

Menerangkan semula konsep inertia.Menerangkan bahawa inertiamenyebabkan suatu objek yangpegun sukar digerakkan;Menjalankan aktiviti seperti inertiabalance atau tolak baldi yang kosongberbanding baldi yang berisi pasiruntuk melihat hubungan antara mass

dengan inertia.


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17. Which of the following velocity-time graphs shows an object moving withuniform acceleration?

A B

CD

Jawapan: B

KelemahanTidak faham acceleration sebagaigradientdalam velocity-time graph.

PemulihanMenerangkan semula cara

menentukan acceleration daripadavelocity-time graph dengan mengiragradientgraf tersebut.

t / s t / s

t / st / s

v / ms- v / ms-

v / ms- v / ms-


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18. Which vehicle has the greatest momentum? Jawapan: A

KelemahanTidak memahami konsep momentumsebagaiproduct of mass and velocity.

Pemulihan

Menerangkan semula maksudmomentum.Hubungkait konsep momentumdengan kehidupan seharian(pendekatan kontekstual).

A

CD

B

mlorry = 2000 kgvlorry = 20 ms

-1mlorry = 2000 kgvlorry = 15 ms

-1

mbicycle = 200 kgvbicycle = 10 ms

-1

mbicycle = 200 kgvbicycle = 5 ms

-1


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19. Which of the following shows a situation with unbalanced forces?A

A lorry moving at constant velocity

B

A picture frame hung on a wall

C

A parachute accelerating downwards

D

A sampan floating on water

Jawapan: C

KelemahanTidak memahami bahawa balancedforces menyebabkan suatu objeksama ada at restatau bergerakdengan constant velocity.

PemulihanMenerangkan semula konsepbalanced forces.Memerhati dan membandingkansituasi-situasi yang mempunyaibalanced forces dan unbalancedforces.


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20. The figure shows a truck that moves from Pto Q. Engine oil drips from thetruck at equal time intervals along PQ.

The truck is

A at restB acceleratingC deceleratingD moving with constant velocity

Jawapan: B

KelemahanTidak dapat mengenalpasti types ofmotion daripada ticker tape atauperalatan-peralatan yang serupa.Keliru antara keadaan at rest,constant velocity, acceleration dandeceleration.

PemulihanDemonstrasi / eksperimen denganmenggunakan ticker timer.Menerangkan semula types of motionberdasarkan corak ticker tape.Latih tubi untuk mengenal pasti

pelbagai keadaan gerakan daripadacorak ticker tape.

P

Q

Engine oil drop


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21. The figure shows a section of a ticker-tape produced by a trolley.

directionof motion oftrolley

The time for one tick is 0.02 second.What is the average velocity of the trolley?

[ average velocity = total displacement ]

total time taken

A 10 cm s-1B 20 cm s-1C 100 cm s

-1

D 200 cm s-1

Jawapan: D

KelemahanTidak dapat menentukan bilangandetik yang ditunjukkan pada pitadetik.

PemulihanMemahirkan diri dengan pengiraan

menggunakan pita detik.20 cm

. . . . . .


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22. A bus moving with an initial velocity 50 m s-1

comes to a stop. The brakingdistance of the bus is 500 m.

Determine the deceleration of the bus.

[ v2= u2+ 2as]

A 2.5 ms-2

B 10.0 ms-2C 25.0 ms-2

Jawapan: A

KelemahanGantian nilai yang salah ke dalamformula.

PemulihanLatih tubi dalam topik linear motion.

23. A ball has a mass of 4 kg and momentum 12 kgms-

.

What is the velocity of the ball?

[ Momentum = mass x velocity]

A 3 ms-1B 4 ms-1C 12 ms-1D 48 ms-1

Jawapan: A

KelemahanTidak memahami istilah momentumdan formula mengira momentum.

PemulihanMemahirkan diri dengan penggunaanformula momentum.


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24. The figure shows a stopwatch.

The reading of the stopwatch is

A 11.1 sB 11.2 sC 11.3 sD 11.4 s

Jawapan: D

KelemahanPelajar gagal membuat bacaan yangbetul.

Pemulihan

Latihan menggunakan jam randikyang sebenar.


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25. The figure shows two loads connected by an inelastic string through africtionless pulley.

What is the resultant force acting on the system?

A 30 NB 40 NC 70 ND 110 N

Jawapan: A

KelemahanTidak memahami konsep resultantforce dalampulley system.

PemulihanPerbanyakkan latihan berkaitandenganpulley system.

70 N

40 N

pulley

inelastic string

load

load


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26. The figure shows two petrol trucks.

Truck Xcarries petrol in one big tank while truck Ycarries petrol in 3 smalltanks. Truck Yis a safer truck to use compared to truckXbecause

A tanks in truck Yexperience a greater pressure than tank in truckX.B tanks in truck Yexperience a greater momentum than tank in truckX.

C tanks intruckYexperience a smaller inertia than tank in truckX.D tanks in truckYexperience a smaller acceleration than tank in truckX.

Jawapan: D

KelemahanTidak tahu kesan negatif dan positifinertia.

PemulihanMembuat rujukan tambahan tentangkesan inertia.

TruckX Truck Y


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27. The figure shows an object of mass 10 kg being pulled by a force of 100 N.The friction between the object and the surface is 10 N.

What is the acceleration of the object?

[ Force = mass x acceleration ]

A 9 m s-2

B 10 m s-2C 11 m s-2D 12 m s-2

Jawapan: A

KelemahanTidak dapat mengira resultant forcedengan betul.

Gagal meletakkan tanda negatif padageseran.

Tidak tahu menggunakan formulaF = ma.

PemulihanPerbanyakkan latihan pengiraanresultant force dan penggunaan

formulaF = ma.

100N

rough surface

friction = 10N


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28. The figure shows the velocity time graph of a moving object.

How is the total displacement of the object determined from the graph?

___________________________________________________________

____________________________________________________________

Jawapan:Total displacement is equal to thearea under the graph.By determining the area under thegraph.

Kelemahan

Tidak memahami graf gerakanhalaju masa.

PemulihanMengulangkaji graf halaju masa.

v/ ms-

t/ s


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29.

Question 29 and 30 refer to the figure.

The figure shows a boy jumping off a skateboard.

State the direction of the motion of the skateboard when the boy jumps off.____________________________________________________________

Jawapan:The skateboard moves in theopposite direction

KelemahanTidak memahamiprinciple ofconservation of momentum.

PemulihanMengulangkaji principle ofconservation of momentumserta penggunaannya.

30. Using the principle of conservation of momentum, explain your answer toquestion 29.

___________________________________________________________

___________________________________________________________

Jawapan:The forward momentum of the boyproduces a momentum of the samemagnitude but in the oppositedirection to the skateboard.

KelemahanTidak memahamiprinciple of

conservation of momentum.

PemulihanMengulangkaji principle ofconservation of momentumserta penggunaannya.

teacher's copy module 1

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