Jawabsemuasoalan

1.(a) Apakahmaksudkuantitifizik?What is meant by physical quantity?

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(b) Apakahmaksudkuantitiasas?What is meant by base quantity?

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(c) LengkapkanJadual 1dibawah.Complete the table below.

Kuantitiasas Symbol kuantitiasas

Unit SI Simbolbagi Unit SI

(5 markah)

(d) Frekuensigelombang radio darisebuahstesenpenyiaranialah 108 MHz.Nyatakanfrekuensitersebutdalambentukpiawaidengan unit Hz.State the frequency in standard form with unit Hz.

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(e) Rajah 1 menunjukkansebuahsegiempattepat.Diagram 1 shows a rectangle.

(f) Tentukankeluasansegiempattepatitudalam unit m2.Determine the area of the rectangle in m2.

(2 markah)

1

12 cm

15 cm

Jadual 1

Rajah 1

2. Jadual 2menunjukkanbacaan-bacaanbagi diameter sebatanglogambulat yang diukurdenganmenggunakanpengukur-pengukurS, T dan P. Nilaisebenardiameterlogambulatituialah 1.53 cm.Table 1 shows the readings of diameter of a spherical metal that is measured by instruments S, T and P. The actual value of the diameter is 1.53 cm.

Pengukur/ Instruments

Diameter logambulat / cm

S 1.53 1.53 1.53T 1.51 1.52 1.52P 1.51 1.52 1.53

Jadual2

(a)(i) Namakanalatpengukur di atas.Name the instrument above.

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(ii) Mengapakah pengukuran itu dilakukan tiga kali dan nilai purata dihitung?Why measurement is repeated three times and average value is calculated?

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(b)(i) Berdasarkan jadual di atas, nyatakan pengukuran manakah paling persis?Based on the table above, which measurement is moreprecise?

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(ii) Berikan sebab bagi jawapan anda di (b)(i).Give the reason for the answer in (b)(i).

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3.

Azharberjalan 300 m kearahSelatan dari S ke T. Diakemudianberjalan 400 m kearahTimurmenujuke U sepertiditunjukkanpada Rajah 2. Azhar walks 300 m to the South from S to T. He then walks 400 m Eastward to U as shown in Figure 2.

(a) Apakahmaksudsesaran? What is displacement?

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(b) Apakah jenis kuantiti fizik bagi sesaran?What type of physical quantity is displacement?

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(c) TunjukkansesaranbagiAzharpada Rajah 2.Show on Figure 2 Azhar’s displacement.

(1 markah)

(d) (i) Hitungjarak yang dilaluiolehAzhar.Calculate distance covered by Azhar.

(1 markah)

(ii) Hitungsesaran yang dilaluiolehAzhar.Calculate displacement covered by Azhar.

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TRajah 2

S

U

(3markah)(iii) JikaAzharmengambilmasa 500 s untukberjalandari S ke U, tentukanhalajunya.If Azhar takes 500 s to walk from S to U, determine Azhar’s velocity.

(2markah)

4. Rajah3menunjukkansebuahangkupvernier.Diagram 3 shows the vernier callipers.

(a) Namakankuantitiasas yang diukurolehangkupvernierName the base quantity measured by the vernier callipers.

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(b) NamakanbahagianberlabelX.Name the part labelled X.

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(c) NyatakanfungsiX.State the function of the X.

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(d) Berapakah kepekaan bagi angkup vernier?What is the sensitivityof vernier callipers?

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BikarSkalautama

Rajah 3

(1 markah)5. Rajah 4.1 menunjukkan bacaan awal jam randik pada awal suatu eksperimen.

Jam randik ini digunakan untuk mengukur masa 20 ayunan lengkap yang dilakukan oleh satu bandul ringkas yang panjangnya, l.Diagram 4.1 shows the initial reading of a stopwatch at the beginning of an experiment. The stopwatch was used to measure the time for 20 complete oscillations made by a simple pendulum of length, l.

Rajah 4.2 menunjukkan bacaan jam randik itu pada akhir eksperimen.Diagram 4.2 shows the reading of the stopwatch at the end of the experiment.

Rajah4.1 Rajah4.2

(a) (i) Nyatakanjenisralat yang ditunjukkanpada Rajah 4.1.State the type of error shown in Diagram 4.1.

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(ii) Berapakah masa sebenar yang diambil oleh bandul itu untuk melengkapkan 20 ayunan?What is the actual time taken for the pendulum to complete 20 oscillations?

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(b) (i) Tentukan tempoh satu ayunan lengkap, T, bagi bandul ini.Find the period of one complete oscillation, T, for this pendulum.

(2 markah)

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(ii) Hubungan antara panjang, l, dan tempoh, T, satu bandul ringkas diberikan

oleh persamaan, l=( g

4 π2 ) T 2 .Dengan menggunakan nilai T dalam (b)(i), hitungkan panjang, l bandul itu. [Diberibahawa π = 3.142dan g = 10 m s-2]The relationship between the length, l, and the period, T, of a simple

pendulum is given by the equation, l=( g

4 π2 ) T 2 .Using the value of T obtained in (b)(i), calculate the length, l, of the pendulum. [ Given that π = 3.142 and g = 10 m s-2]

(2 markah)

6. Rajah 5.1 menunjukkansatu thermometer cecair-dalam–kaca.Diagram 5.1 shows a liquid-in-glass thermometer.

Rajah 5.1

(a) (i) Namakancecair P yang digunakandalamtermometer .Name the liquid P used in the thermometer.

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(ii) Nyatakanperubahansifatfizikalpadacecairbilasuhubertambah.State the physical change in the liquid when the temperature increases.

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(b) Rajah 5.2 menunjukkanduajenistermometer.Diagram 5.2 shows two types of thermometers.

(i) Termometer yang manakah yang lebihpeka ?Which thermometer is more sensitive ?

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(ii) Nyatakansatusebabbagijawapan di 1 (b)(i).State one reason for your answer in 1 (b)(i).

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Rajah 5.2

12

10

8

6

4

2

7. Carta pita dalam Rajah 6menunjukkan pita detikdaritrolibergerak. Setiapbahagian pita mempunyai 10 detik.The chart in Figure 6 shows 10 ticks of a ticker tape from a moving trolley. The frequency of the ticker timer is 50 Hz.

(a) Nyatakanjenisgerakantrolitersebut.State the type of motion shown by the trolley.

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(b) Hitunghalajupuratabahagian 10 detikterakhirpadacarta pita.Calculate the average velocity of the last 10 ticks of the tape chart.

(2 markah)

(c)Hitungpecutantroli.Calculate the acceleration of the trolley.

(2 markah)

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Rajah 6

Masa, t (s)

Panjang, l(cm)

2000100 3000 4000 5000 6000

2

6

8

4

Halaju/ms-1

Masa, t(s)[masa/s}

R S

TU

V W

X0

0

Rajah 7[Rajah 2.1]

8. Rajah 7menunjukkanbagaimanalajupenunggangbasikalberrubahdalammasa 600 ssemasapertandingan Le Tour de Langkawi.Figure 7 shows how the speed of a cyclist varies for a 600 s duration during the Le Tour de Langkawi competition.

(a) Apakah yang dimaksudkan dengan laju?What is speed?

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(b) Nyatakan jenis gerakan antara titik S dan T bagi penunggang basikal tersebut.State the motion of the cyclist between points S and T.

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(c) Nyatakanpadabahagianmanagraf yang menunjukkanpenunggangbasikalitubergerakdenganhalaju malar.State which parts of the graph show the cyclist moving with constant velocity.

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(d) Hitungkanjarak yang dilaluiolehpenunggangbasikalitudalammasa 350 s yang pertama.Calculate the distance travelled by the cyclist in the first 350 s.

(2 markah)

9.Seorangkanak-kanakdanseorangdewasaduduk di atasduabuaian yang serupasepertidalam Rajah 8.A child and an adult each sits on similar swings as shown in Diagram 8.

(a) Jikamerekadiberikansatutolakan yang sama, yang manasatukahlebihsukarIf they are given a push, which one of them is more difficult

(i) digerakkan?to be moved?

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(ii) diberhentikan?to stop?

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(iii) Berisebabuntukjawapanandadalam (a)(i) dan (ii)Give reason to your answers in (a)(i) and (ii)

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Rajah 8

Kanak-kanak Dewasa

(b)(i)Sifatsesuatujasad yang menentangperubahankeatasnyasamadasemasa pegun atau bergerak dikenali sebagai inersia. Nyatakansatuhubungandi antara jisim dan inersia berdasarkan jawapan anda dalam (a).

The property in which a body resists change from its state of restor motion is known as inertia.

Basedon your answer in (a) state the relationship between the inertia and mass.

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ii) Mengapasebuahkapaltangkiperlumematikanenjinyasejauh 3 km daripadapelabuhansebelumberhenti.Why does a supertanker needs to stop its engine over a distance of about 3 km before it can finallycome to a stop.

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iii) Berisatukesanpositifinersia.Give one positive effect of inertia.

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10. Rajah 9 menunjukkanHidayatmelompatdari bot yang pegunketebingsungai.Figure 9 shows Hidayat jumping from a stationary boat onto the river bank.

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Rajah 9

(a) Apa yang berlakupada bot apabilalelakiituterjundari bot? Terangkanjawapananda.

What happens to the boat when the man jumps off from the boat? Explain your answer.

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(b) Nyatakanprinsipfizik yang berkaitandenganpergerakan bot apabilalelakimelompatketebingsungai.State the principle of physics connected with the movement of the boat when the man jumps onto the river bank.

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(c) Jikaseoranglelakiberjisim 60 kg melompatketebingdenganhalaju 2 m s-1

danjisim bot ialah 150 kg, hitunghalaju bot apabilalelakimelompatdarinya.If a man of mass 60 kg jumps with a velocity of 2 ms-1 and the mass of the boat is 150 kg, Calculate the velocity of the boat when the man jumps off from it.

(3 markah)

(d) Namakansatuaplikasiprinsipfizik yang dinyatakandalam (a) dalampenjelajahanangkasalepas.

Name one application of the physics principle stated in (a) in an exploration of outer space.

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11. Rajah 10.1 menunjukkandua orang budaklelakisedangmenolaksebuahkotakyang besar.Selepasbeberapaketika,kotakitumasihberada di dalamkeadaanpegun.Diagram 10.1 shows two boys pushing a large box. After some time, the box still remains stationary.

Rajah 10.1

Rajah10.2 menunjukkansebuahkapalterbangbergerakkehadapandenganhalajuseragampadasuatuketinggian yang tetap.Diagram 3.2 shows an aircraft moving forward with a uniform velocity at a constant height.

Rajah 10.2

(a) Berdasarkansituasidalam Rajah 10.1 dan Rajah 10.2Based on the situation in Diagram 10.1 and the situation in Diagram 10.2,

(i) Nyatakankesamaantentangmagni tuddanarahbagidaya-daya,FIdanF 2 , F 3dan F 4 .State similarities about the magnitudes and directions of the forces FI and F 2 , F 3 and F 4 .

Magnitudes/Magnitud:…………………………………………………….

Directions/Arah:…………………………………………………………….( 2markah)

(ii) Berapakahdayabersihbagikedua-duasituasi?

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What is the net force in both situations?

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(iii) Berdasarkanjawapan di 11(a)(i)dan 11(a)(ii),namakankonsepfizik yang terlibat.Based on the answers in 11(a)(i) and 11(a)(ii), name the physics concept involved.

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(b)(i)

SuatukapalterbanglainmempunyaiF3lebihbesardaripadaF4.Terangkanpergerakankapalterbangini.Another aircraft has F3 greater than F4. Describe the motion of this aircraft.

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(ii) Terangkanjawapan di (b)(i). Explain the answer in (b)(i).

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12. Rajah 11.1menunjukkanpergerakkankotakdari P ke Q apabilaia di tarikolehseorangpekerja. Masagerakandari P ke Q diukurdenganmenggunakan jam randik.

Rajah 11.2 menunjukkanbacaan jam randikapabilakotak di titik P dan Q masing-masing.Diagram 11.1 shows the movement of the box from point P to point Q when it is pulled by a worker. The time for movement from the point P to the point Q is measured using by a stopwatch

Diagram 11.2 shows the pointer of stopwatch when the box is at point P and at point Q respectively.

Rajah 11.1

Rajah 11.2

Rajah 11.3 menunjukkanpergerakkankotakdari P ke Q apabilaiaditarikolehduapekerja. Masa yang diambil di ukurdenganmenggunakan jam randik.

Rajah 11.4 menunjukkan jam randikapabilakotakmasing-masing di P dan Q.

Diagram 11.3 shows the movement of the box from point P to point Q when it is pulled by two workers. The time for movement from the point P to the point Q is measured by using a stopwatch.

Diagram 11.4 shows the pointer of stopwatch when the box is at point P and at point Q respectively.

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Box

P Q

Rajah11.3

Rajah11.4

(a) Namasatudaya yang bertindakkeataskotaktersebut..Name one force which acting to the box.

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(b) Perhatikan Rajah 11.1 dan Rajah 11.3, Observe Diagram 11.1 and Diagram 11.3,Banding dayapekerja yang dikenakankeataskotak.Compare the force of the worker that exerted on the box.

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(c) Perhatikan Rajah 11.2 dan11.4,Observe Diagram 11.2 and 11.4,Banding masadiambiluntukmenggerakkankotakantara P dan Q.Compare the time taken to move the box between point P and Q.

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(d) Berdasarkanjawapan di (c ), banding pecutankotak.Based on the answer (c), compare the acceleration of the box.

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Box

P Q

(e) (i) Berdasarkanjawapan di (b) dan (d), nyatakanhubungandayadanpecutankotak.Based on answer 6 (b) and 6 (d), state the relationship between the force of the worker and acceleration of the box.

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(ii) Nyatakanhukum yang terlibat.State the law involved.

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(f) (i) Berdasarkan Rajah 11.3, apa yang akanberlakupadapecutankotakapabilakotak yang berjisimbesardigunakan?Based on Diagram 11.3 ,what happens to the acceleration of the box if the box of bigger mass is used ?

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(ii) Berikanalasanbagijawapananda.Give one reason for your answer in (f) (i).

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13. (a) Apamaksuddayaimpuls? What is meant by impulsive force?

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(b )Terangkanmengapa bola yang mempunyaikurangudaratidakbergerakjauhapabiladisepakberbanding bola yang mempunyaicukupudara. Explain why a ball that has less air does not move further when it is kicked.

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(c) Apabilaberlakunyakemalanganmpemandukeretamengalamikecederaan. Cadangpengubahsuaianuntukmengurangkankecederaanteruk. Terangkancadanganandatersebut.

Pengubahsuaian/ modifications

Penerangan/ explanations

Menggunakan system brekjenis ……..

…………………………………………..

Untukmenggelakkankeretadari …………..

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Memasang ……………………………..

Untukmengelakkanpenumpangterhumbankehadapanakibatdarikesannegatif …………………… apabilakeretaberhentisecaratiba-tiba.

(10 markah)

KERTAS SOALAN TAMAT

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