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The following information may be useful. The symbols have their usual meaning.

1. a =t

uv

1. v2 = u2 + 2as

2. s = ut+

2

1at

2

3. Momentum = mv

4. F = ma

5. Kinetic energy = mv2

6. Gravitational potential energy = mgh

7. Elastic potential energy =2

1Fx

8. Power,P= energytime

9. =V

m

10. Pressure, p=hg

11. Pressure,p=A

F

12. Heat, Q = mc

13. Heat, Q = m

14. P1V1 = P2V2

15. V1 = V2T1 T2

16. P1 = P2T1 T2

17.T

PV= constant

18. n =r

i

sin

sin

20. n = real depthapparent depth

21.vuf

111

22. Linear magnification, m = vu

23. P = 1/ f

24. v = f

25. =D

ax

26. Q =It

27. E = VQ

28. V = IR

29. E = V + Ir

30. Power,P = VI

31.P

S

P

S

V

V

N

N

32. Efficiency =PP

SS

VI

VIx 100%

33. eV = mv2

34. E = mc2

35. g= 10 ms-2

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Lamp

Ripple tank

Screen

Dipper

1. Diagram 1.1 shows a ripple tank being used to investigate the interference pattern for waterwaves. The two dippers produce two set of circular waves which are coherent.

Diagram 1.1

Diagram 1.2 shows the interference pattern obtained.

The experiment is then repeated by increasing the frequency of rotation of the motor andinterference pattern obtained is shown in Diagram 1.3

Diagram 1.2 Diagram 1.3

(a) What is meant by coherent?

[1 mark]

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(b)Using the interference patterns Diagram 1.2 and Diagram 1.3, state two observationsabout the separations between consecutive nodal lines.

[2 marks ]

(c) Compare the wavelengths of the water waves in Diagram 1.2 and Diagram 1.3

[ 1 mark]

(d) Name one constant variable for this experiment ?

[ 1 mark]

(e) Relate the wavelengths of the water waves with the separations betweenconsecutive nodal lines.

[ 1 mark]

(f) If the depth of water in the ripple tank is increased, what happen to theinterference pattern produced. Explain your answer.

[ 2 marks ]

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2. Diagram 5.1 shows a simple mercury barometer placed at the sea level.

Diagram 5.2 shows the height of mercury column when barometer is placed on the top ofMount Kinabalu.

vacuum

Placed at the sea level Placed on the top of MountKinabalu


(a) Observe Diagram 5.1 and Diagram 5.2

(i) Compare the vertical column of mercury.

[ 1 mark]

(ii) Based on the answer in 5 (a) (i), relate the altitude with the height

of the vertical column of mercury.

[ 2 mark]

(b) (i) Name the physical quantity which affect the height of the verticalcolumn of mercury.

[ 1 mark]

(ii) What is the relationship between the physical quantity in 5 (b)(i)with the height of the vertical column of mercury.

[ 2 mark]

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Filled with gas

Mercury column

Diagram 5.3

(c) If the gas is filled in the vacuum column, what will happen to the height ofthe vertical column of mercury. Give a reason.

[ 2 marks ]

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3. The figure below shows the speed-time graph for the first 80 s of the journey of a van.

(a) During the motion shown, describe what happens to(i) the speed of the van.

----------------------------------------------------------------------------------------------[1 mark ]

(ii) the acceleration of the van.

---------------------------------------------------------------------------------------------[1 mark ]

(b) Calculate the acceleration of the van during the first 30 s.

[2 marks]

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(c) Determine the maximum speed of the van in kmh-1.

[ 2 marks ]

(d) The van decelerates uniformly to rest from t = 80 s to t = 120 s. Complete the graph and obtainthe speed of the van when t = 100 s

Speed of the van = ___________________________

[ 2 marks

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84. The Diagram 1 shows a simple hydraulic jack with a small piston S and a large piston P

with cross-sectional area of 5 cm2

and 50 cm2

respectively. A force of magnitude 20 N is

applied to the piston S.

DIAGRAM 1

(a) Calculate

(i) the pressure that is transmitted by the hydraulic fluid,

__________________________________________________ (1 marks)

(ii) the weight, W, of the load supported by piston L,

__________________________________________________ (1 marks)

(iii) the distance moved by piston L.

__________________________________________________ (2 marks)

(b) Name the principle used in solving part (a) above.

_______________________________________________________ (1 mark)

(c) State an assumption made when solving part (a) above.

____________________________________________________________________

____________________________________________________________________(2 marks)

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95. The Figures 3 below shows the arrangement of the molecules of a substance in its solid,

liquid and gaseous states.

FIGURE 3

(a) In which arrangement A, B or C, the molecules are most energetic?

______________________________________________ (1 mark)

(b) Explain

(i) Why gases are easier to compress than liquid.

________________________________________________________________

________________________________________________________________

(1 marks)

(ii) Why latent heat is needed to change the substance from solid to liquid.

________________________________________________________________

________________________________________________________________

(2 marks)

(c) What is meant by the latent heat of vapourization of a liquid?

____________________________________________________________________

____________________________________________________________________(1 mark)

(d) 500g of the above substance in its liquid form at its boiling point requires 170 kJ of

heat to totally change it into steam. Calculate the specific latent heat of vapourizationof the substance.

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________(2 marks)

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106.

DIAGRAM 2

The Diagram 2 shows a trawler used in deep-sea fishing using a sonar device.

(a) State the phenomenon of the application of the sonar device.

_____________________________________________________ (1 mark)

(b)The frequency of sonar is 6.0 x 10 Hz. The velocity of the sound in sea water is

1500 ms .

(i) Why does the sonar device use sound with high frequency?

________________________________________________________________

(2 marks)

(ii) What is the wavelength of the sound in the sea water?

________________________________________________________________

(1 mark)

(iii) If the time interval between transmitting and receiving sound wave is 0.2 s, howfar is the shoal of fish from the trawler?

________________________________________________________________(1 mark)

(c) State another use of the sonar device.

____________________________________________________________________(1 mark)

8

1

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7. Ahmad cycles to school every day. The graph in Figure 2 shows a typical velocity-time graph of

Ahmads journey to school.

Figure 2

a) Describe the following parts of Ahmads movement.

i) A to B

____________________________________________________________

[1 mark

ii) B to C

____________________________________________________________

[1 mark

b) For how long was Ahmad travelling at constant deceleration?__________________________________________________________________

[1 mark

c) Calculate the total distance travelled by Ahmad.

[3 marks

d) Find Ahmads average velocity for the whole journey.

[2 marks

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7. Figure 7(a) and 7(b) show two students of equal mass of 50 kg each playing on a skateboard. The gir

was stationary at the beginning and then moves together with the boy after collision.

Before collision After collision

Figure 7 (a) Figure 7 (b)

a) State the principle of conservation of momentum.

________________________________________________________________

[1 mark

b) Calculate total momentum before collision.

[2 marks

c) Calculate the velocity of the boy and girl after collision.

[3 marks

d) Is the collision between the boy and girl elastic? Give reason for your answer.

________________________________________________________________

________________________________________________________________

[2 marks

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Section B

[ 20 marks ]

Answer any one question

9. Diagram 9.1 shows two basketballs of the same mass being projected towards a wall. Ball A is hard

while ball B is soft due to insufficient pressure.

Diagram 9.2 shows the condition of the balls when they hit the wall.It was noticed that Ball A is rebounced with a higher velocity than Ball B.

A A

B B


(a) What is the meaning of momentum?

[ 1 mark]

(b) Using Diagram 9.1 and Diagram 9.2, compare the shape of the ball when they hit the wall, the

velocity after collision and the time of impact.

State the relationship between the time of impact with the(i) impulsive force(ii) velocity after collision

[ 5 marks ]

(c) By using the relevant physics concept, explain why a softball player moves his hand backwardswhile catching a fast moving ball.

[ 4 marks ]

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Diagram 9.3

(d) Driving is a necessity nowadays. To increase the safety of the driver and the passengers in a car,

several safety features were installed into the car. List five of these features and how they can help toreduce injuries in an event of an accident.

[ 10 marks ]

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10. Diagram 10.1 shows a sound wave from a loudspeaker travel through balloon that filled with carbon

dioxide which is denser than air.

Diagram 10.1

Diagram 10.2 shows an incident ray passes through a glass block.

Incident ray

air

glass block

Diagram 10.2

(a) (i) What is meant by transverse waves and longitudinal waves ?

[ 2 marks ]

(ii) Give two comparison between sound waves and light waves.

[ 2 marks ]

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(b) (i)With reference to Diagram 10.1 and Diagram 10.2, compare the density of the medium,the direction of the wave propagation and the speed of the wave after passing through the different

medium.

Relate the density of the medium, the direction of the wave propagation and the speed of the wave afterpassing through the different medium to deduce a relevant physics concept.

[ 5 marks ]

(ii) Name the wave phenomenon that explain the above situation.

[ 1 mark]

Diagram 10.3

c) A contractor wants to build a resort with safety features at beach area, so tourist will enjoy

staying at the resort.

You are asked to give suggestion for the project based on the knowledge of the phenomenan ofwaves and the following considerations:

(i) The location of the resort

(ii) Features to reduce erosion of the shore

(iii) Features to enable tourist enjoying calm water[ 10 marks ]

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Section C

[ 20 marks ]

Answer any one question

11. Encik Adli will be taking part in a four-wheel drive expedition to Taman Negara. In the expedition, he

will have to drive through a hilly and unpaved area, and to cross streams.

Table 11 shows the characteristic of vehicles that can be used in the expedition,

Characteristics

Vehicles

Mass / kgEngine Capacity

(cc) / cm3

Types of

engine

Diameter of

tyre / mm

P 3000 2000 Diesel 800

Q 1000 1500 Petrol 400

R 2000 2500 Diesel 600

S 1800 2000 Petrol 500

T 1500 2500 Petrol 500

Table 11

(a) What does mass mean ?

[ 1 mark]

(b) You are asked to investigate the characteristics of the four wheel drive

that can be used in the expedition.

Based on the table as shown in Table 11;

(i) Explain the suitability of each characteristics of the vehicles in the table above(ii) Determine the most suitable vehicle to participate in the expedition.

[ 10 marks ]

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Diagram 11

(c) Adli drives a car on a straight road. He starts from rest and reaches avelocity of 5 ms

-1after 20 s. Then, he maintain the speed for 30 s before he stop his car

in 15 s.

(i) Sketch the velocitytime graph to represent the motion of the car.

[ 5 marks ]

(ii) Based on the graph in (c) (i), calculate the distance traveled by thecar.

[ 2 marks ]

(iii) What is the acceleration of the car?

[ 2 marks ]

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a) The ticker-tape P, Q and R shown in the Diagram 12 (a) are produced by three trolleys pulling the tapes

through a ticker timer operating at 50 Hz.

i) Describe the motion represented by each of the tape P, Q and R.

[6 marks

Diagram 12 (a)

ii) Find the average velocity of the trolley that produces tape P.

[2 marks

iii) Find the average acceleration of the trolley that produces tape R.

[3 marks

b) A bullet of mass 20 g is fired from 2 kg riffle with a velocity of 20 ms-1

towards 3 kg block of wood.

The block of wood is suspended from the ceiling as shown in Diagram 12 (b)

Diagram 12 (b)

i) Find the recoil velocity of the rifle.

[3 marks

ii) Find the maximum height reached by the block of wood after the bullet is embedded in it.

[3 marksiii) Name the principle used in obtaining the answer to (b)(ii)

[1 mark

iv) What energy changes occur when the bullet hits the block of wood?

[2 marks

***End of question paper***

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