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PHYSICS HOLIDAY ASSESSMENT 2008 FORM 4Physics Unit, MRSM Alor Gajah

CHAPTER 1 : INTRODUCTION TO PHYSICS

Part A : Objective Question

1. Which of the following is a base SI

quantity?

A Weight B EnergyC Velocity D Mass

2. Which of the following is a derived

quantity?

A Length B Mass

C Temperature D Voltage

3. Which of the following is not a basic

unit?

A Newton B kilogram

C ampere D second

4. Which of the following quantities

cannot be derived?

A Electric current B Power

C Momentum D Force

5. Which of the following quantities is

not derived from the basic physical

quantity of length?

A Electric charge B Density

C Velocity D Volume

6. Initial velocity u, final velocity v,

time t and another physical quantity k

is related by the equation v - u = kt.

The unit for k is

A m s-1 B m-1 s

C m s-2 D m2 s-2

7. Which of the following has the

smallest magnitude?A megametre B centimetre

C kilometre D mikrometre

8. 4 328 000 000 mm in standard form is

A 4.328 x 10-9 m B 4.328 x 10-6 m

C 4.328 x 106 m D 4.328 x 109 m

9. Which of the following measurements

is the longest?

A 1.2 x 10-5 cm B 120 x 10-4 dm

C 0.12 mm D 1.2 x 10-11

km

10. The diameter of a particle is 250 µm.

What is its diameter in cm?

A 2.5 x 10-2 B 2.5 x 10-4 C 2.5 x 10-6 D 2.5 x 10-8

11. Which of the following prefixes is

arranged in ascending order?

A mili, senti, mikro, desi

B mikro, mili, senti, desi

C mili, mikro, desi, senti

D desi, mikro, mili, senti

12. Velocity, density, force and energy are

A basic quantities

B scalar quantities

C derived quantities

D vector quantities

13. Which of the following shows the

correct conversion of units?

A 24 mm3 =2.4 x 10-6 m3

B 300 mm3=3.0 x 10-7 m3

C 800 mm3=8.0 x 10-2 m3

D 1 000 mm

3

=1.0 x 10

-4

m

3

14. Which of the following measurements

is the shortest ?

A 3.45 x 103 m

B 3.45 x 104 cm

C 3.45 x 107 mm

D 3.45 x 1012 µm

15. The Hitz FM channel broadcasts radio

waves at a frequency of 92.8 MHz in

the north region. What is the frequencyof the radio wave in Hz?

A 9.28 x 104 B 9.28 x 105

C 9.28 x 107 D 9.28 x 1010

16. An object moves along a straight line

for time, t. The length of the line, s is

given by the equation2

2

1 gt s = . The

SI unit of g is

A m2 s2 B m s-2

C s-1 D s-2 m

1

Mechanical Energy




Part B : Structure Question

1. A car moves with an average speed of 75 km h-1 from town P to town Q in 2 hours as shownin Figure 1. By using this information, you may calculate the distance between the two

towns.

P Q

Figure 1

(a) (i) Based on the statements given, state two basic quantities and their respective

SI units.(ii) State a derived quantity and its SI unit.

(b) Convert the value 1 . m to standard form.

5 x 10-3

(c) Complete Table 1 by writing the value of each given prefix.

Table 1

(d) Power is defined as the rate of change of

work done. Derive the unit for power in terms of its basic units.

(e) Calculate the volume of a wooden block with dimension of 7 cm, 5 cm breadth and 12cm height in m3 and convert its value in standard form.

2. Figure 2 shows an ammeter of 0—3 A range.

Figure 2

(a) (i) Name component X.

(ii) What is the function of X?

2




(b) Table 2 shows three current readings obtained by three students.

Table 2

(i) Did all the students use the ammeter in Figure2?

(ii) Explain your answer in (b)(i).

3. Figure 3 shows the meniscus of water in a measuring cylinder K, L, and M are three eye

positions while measuring the volume of the water.

Figure 3

(a) Which of the eye positions is correct while taking the reading of the volume of water?

(b) The water in the measuring cylinder is replaced with 30 cm3 of mercury.

(i) In Figure 4, draw the meniscus of the mercury in the measuring cylinder.(ii) Explain why the shape of the meniscus of mercury is as drawn in (b)(i).

Figure 4

CHAPTER 2 : FORCES & MOTION

Part A : Objective Questions

1. When a coconut is falling to the ground, which of the following quantities is constant?

3

Mechanical Energy




A. Velocity C. Acceleration

B. Momentum D. Kinetic energy

2. In an inelastic collision, which of the following quantities remains constant before and after the collision?

A. Total acceleration C. Total momentum

B. Total velocity D. Total kinetic energy3. Calculate the weight of a stone with mass 60 g on the surface of the moon.

(The gravitational acceleration of the moon is 1/6 that of the Earth.)

A. 0.1 N D. 12.0 sB. 0.2 N E. 0.8 N

C. 0.4 N

4. The momentum of a paticle is dependent onA. mass and acceleration C. mass and velocity

B. weight and force

5. Which of the following diagrams shows a body moving at constant velocity?

A. 2 N 2N

B. 12 N 7 N

C. 12 N 14 N

D. 20 N 17 N

6. The graph below shows the motion of a trolley with mass 1.5 kg.

Velocity / ms-1

4

0 2 4 6 Time / s

Calculate the momentum of the trolley from t = 2s to t = 4s.A. 1.5 kg m s-1 D. 6.0 kg m s-1

B. 3.0 kg m s-1 E. 7.5 kg m s-1

C. 4.0 kg m s-1 7. This figure shows an aircraft flying in the air.

8. m = 0.3 kg

5 m

4

Lift

Thrust Air friction

WeightThe aircraft above accelerates if

A. Lift > Weight C. Lift > Air friction

B. Thrust > Lift D. Thrust > Air friction




What is the momentum of the stone just before it hits the ground?

A. 0.15 kg m s-1 B. 0.3 kg m s-1

C. 1.5 kg m s-1

D. 3.0 kg m s-1

E. 15.0 kg m s-1

9. A big ship will keep moving for some distance when its engine is turned off. This situation

happens because the ship has A. great inertia

B. great acceleration

C. great momentumD. great kinetic energy

10. An iron ball is dropped at a height of 10 m from the surface of the moon. Calculate the time

needed for the iron ball to land.

(Gravitational acceleration of the moon is 1/6 that of the Earth and g = 9.8 N kg-2)

A 0.6 s D 3.5 sB 1.4 s E 12.0 s

C 1.7 s

Part B : Essay Questions

(i) (ii)

Diagram 1.1Diagram 1.1(i) shows the condition of a car moving at high velocity when it suddenly crashes

into a wall.

Diagram 1.1(ii) shows a tennis ball hit with racquet by a player.a) (i) What is the meaning of momentum?

(ii) Based on the observations of Diagram (i) and (ii), compare the characteristics of car

when it crashes into the wall and the tennis ball when it is hit with a racquet. Hence, relate

these characteristics to clarify a physics concept, and name this concept. b) Explain why a tennis player uses a taut racquet when playing.

c) In launching a rocket, a few technical problems have to be overcome before the rocket can

move upright to the sky. By using appropriate physics concepts, describe the design of a rocketand the launch techniques that can launch the rocket upright.

CHAPTER 3 : FORCES & PRESSURE

Part A: Objective Question

5

Mechanical Energy




1. A cylinder has a mass of 12kg and a

cross-sectional area of 200cm2. What

is the pressure acting at its base?A. 6 kPa D. 15 kPa

B. 9 kPa E. 18 kPa

C. 12 kPa2. Wind blows normally on a wall at a

pressure of 200kPa. If the wall has

an area of 5m2., what is the forceacting on the wall?

A. 40kN D. 1200kN

B. 800kN E. 1600kNC. 1000kN

3. Which of the following factor does

not influence the pressure of a

liquid?

A. DepthB. Acceleration due to gravity

C. DensityD. Volume

4. Mercury has density of 13600kgm-3.

If the pressure of mercury is 650kPa,what is the depth from its surface?

A. 4.0m D. 6.4m

B. 4.8m E. 8.0m

C. 5.8m5. What is the pressure of the gas

trapped inside the J-tube, in Pa unit?

A. 1.19 x 105 PaB. 1.90 x 105 Pa

C. 2.19 x 105 Pa

D. 2.90 x 105 PaE. 3.14 x 105 Pa

6. Which instruments is meant for

measuring atmospheric pressure?

A. Carburettor B. Siphon

C. Fortin’s Barometer

D. Hydrometer 7. Figure 7 shows a hydraulic jack.

Piston A and piston B have cross-

sectional areas 5cm2 and 100cm2 respectively. If mass of 3kg is placed

on piston A, what is the maximum

weight that can be lifted by piston B?

A. 300N D. 900NB. 600N E. 1000N

C. 800N

8. Which of the following device is based on the Pascal’s Principle of

pressure transmission?

A. Hydrometer B. Car’s hydraulic brake

C. Bunsen burner

D. Fire extinguisher

9. A ship of mass 80000kg floats on the

sea surface. If the density of the seawater is 1250kgm-3, what is the

volume of the displaced sea water?A. 6.4 m3 D. 800 m3

B. 64 m3 E. 900 m3

C. 640 m3

6

Figure 7



Part B: Structured Question

1. Diagram shows a set up of apparatus for measuring atmospheric pressure.

(a) What is the name for the instrument? ………………………………………..

(b) Determine the atmospheric pressure as measured by the instrument ,

(i) in the cm Hg unit ………………………………………..

(ii) in the Pa unit ………………………………………..

(c) State the change of length of the mercury column above the mercury surface

(i) The tube is raised by 10cm ...

……………………………………………………….

(ii) The surrounding temperature increases

……………………………………………..

(iii) The instrument is brought to the peak of a mountain………………………………..

(iv) Water vapor is brought to the vacuum region

………………………………………

Part C: Essay Question

1.

(a) A fisherman finds that his boat is at different levels in the sea and in the river,

although the boat carries the same load. The density of sea water is 1 025 kg m-3 and

of river water is 1 000 kg m-3.

Figure 1 and 2 illustrate the situation of the boat in the sea and in the river.

(i) What is meant by density?



(ii) Using Figure 1 and 2, compare the levels of the boat and the volumes of water

displaced by the boat.

Relating the mass of the boat with its load, the volume of water displaced and the

density of the water, deduce a relevant physics concept.

(iii) Name the physics principle that explains the above situation.

(b) A submarine can sail on the sea surface and under the sea.Explain how a submarine on the surface submerges.

2. Figure below shows an iron penetrates a layer of sand placed in a beaker. When water is

poured into the beaker, the iron rod makes another penetration into the sand layer as

shown in figure below.

Based on the observation,

a) state one suitable inference that can be made

b) state one appropriate hypothesis for an investigation

c) with the use of apparatus such as spring balance, load, thread, eureka can and other

apparatus, describe an experiment framework to test your hypothesis. In your description,

state clearly the following:

i) aim of the experiment

ii) variable in your experiment

iii) list of apparatus and materials

iv) arrangement of the apparatus in a sketch

v) the procedure of the experiment

vi) the way you list the data

vii) the way you would analyse the data.

TECHNIC FOR MEMORISINGTASK

Please DRAW completely a mind map for following topics:

1. Introduction of Physics

2. Forces & Motion

3. Forces & Pressure

(Contribute 10 marks for Standerdize Test 1 Semester 1 2009)

Estimate Time

If you spent 1 hours everyday, you can finish this homework about 3 weeks, insyallah!

Note: Please use paper sheet to answer structured and essay questions.

GOOD LUCK & HAVE A NICE HOLIDAY!!!

Ironrod

Sand

Water

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