BAHAGIAN A [30 markah] Masa: 45 minit

MODULE 18SECTION A

Answer all the questions.

Every question is followed by four answers A, B, C and D. Choose the correct answer. Then, blacken your answer on the answer sheet provided. The suggested time for this section is 45 minutes. If you are unable to answer a question, proceed to the next question.1.Below are three situations.

Which of these situations show the effect of a force ?

AP and Q only

BP and R only

CQ and R only

DP, Q and R2.A bus takes three hours to reach a destination of 240 km away. What is its speed ?

A 80 km/h

B237 km/h

C243 km/h

D720 km/h3.Which of the following involves attractive force ? 4. Figure 1 shows an investigation about frictional force. Table I shows the result of the investigation .

FIGURE 1SurfaceDistance travelled by a toy car

Tarred4 cm

Sand paper7 cm

Mirror10 cm

What is the conclusion of the investigation ?

A The tarred surface has the greatest frictional force.

BThe mirror surface has the greatest frictional force.

CAs the frictional force increases, the toy car moves further.

DThe frictional force on the sand paper surface is greater than that on the tarred surface.5. Figure 2 shows a carpenter sawing a piece of wood.

FIGURE 2

Which of the following activities involve the two forces used by the carpenter ?

6.Which statements about force are true ?

I It can be seen.

IIIt causes an object to move.

IIIIt is a pull or a push.

IVIt can change the motion of an object.AI and II only

BI and III only

CI, II and III only

DII, III an IV only

7.Which picture shows a pulling force ?

8.The list below shows four sporting events.

W-Badminton

X-Javelin

Y-Archery

Z-Bowling

In which events is a pushing force involved ?

AW and X

BX and Y

CW and Z

DW, X and Z9.Figure 3 shows a ball remaining stationary on the floor.

FIGURE 3

What force enables the ball to remain in that position ?

APushing

BPulling

C Friction

D Magnet

10. Which of these activities does not need force ?

ASwimming

B Cycling

C Painting

DTalking

11. Which are the ways to reduce friction ?

I Using sand

IIUsing grease

IIIUsing a magnet

IV Using rollers

AI and II only

BI and III only

CII and IV only

DII, III and IV only

12.Which of the pictures shows that a force changes the shape of an object ?

13.

The statement above shows that

Aforce can change the shape of an object.

Bforce can change the speed of an object.

Cforce can change the movement of an object.

Dforce can move a stationary object.14. What can a force do ?

I Bend a metal rod

IIStop a moving object

IIIMake moving objects move faster

IVChange the direction of a moving object

AI and II only

BI and III only

CI, II and III only

DI, II, III and IV 15. Figure 4 shows a moving ping pong ball hit by a player.

FIGURE 4

What is the effect of the force shown in the above picture ?

AThe force changes the shape of the object.

BThe force slows down the moving object.

CThe force causes the stationary object to move.

D The force changes the direction of the moving object.

16. Figure 5 shows the pattern on the sole of a shoe.

FIGURE 5

What is the use of the pattern?

ATo make the shoe looks more beautiful.

BTo make the shoe exerts more friction.

CTo make the shoe lasts longer.

DTo make the shoes heavier.

17. Which of the following does not involve a push force ?

18. The picture shows a worker pulling a heavy load.

The following methods can be used to move the heavy load.

I Place a log under the load. IIPlace a few balls under the load.IIICoat the floor with oil.

IVPull the load using a longer rope.Which of the following combination of methods will move the heavy load most easily.

A

I and II only

B

I, II and III only

C

II, III and IV only

D

I, III and IV only19. A pull is exerted on some objects. Which of the following can became longer when the force is

applied ?

I

A rubber band

II

A coiled spring

IIIA wooden broomstick

A

I and II onlyB

I and III only

C

II and III only

D

I, II and III only

20. Figure 6 shows a ball kicked by a player bouncing off the goalpost.

FIGURE 6

What is the effect of force is shown ?

A A force can stop a moving object.

B A force can speed up a moving object.

C A force can slow down a moving object.

D A force can change the direction of a moving object.

21. Figure 7 shows a boy pumping the tyre of his bicycle.

FIGURE 7

Which of the following activities involves the two forces used by the boy ?

22. Which of the following activities involves the least amount of frictional forces ?

23. Which of the following statements does not describe friction ?

AFriction is a force.

BFriction opposes motion.

CFriction speeds up a moving object.

DFriction acts between two surfaces in contact.

24. Which of the following observations help us to infer that friction is a type of force ?

IA booksliding on a table slows down and stops.

IIIt is easier to open the lid of a jar with dry hands with oily hands.

IIIIt is difficult to move a box on a rough floor.

AI and II only

BI and III only

CII and III only

DI, II and III

25. Figure 8 shows an object X being pulled along the surface of object Y.

Object YFIGURE 8

If the surface of object Y is made rougher, what will happen to the frictional force between the

two objects?

AThe frictional force will become smaller.

BThe frictional force will become greater.

CThe frictionall force will remain the same.

26. Figure 9 shows the door of a room.

FIGURE 9

The door is difficult to open and close. What should be done to the door hinges ?

AOil the hinges.

BCoat the hinges with lanquer.

CRub the hinges with sandpaper.

DClean the hinges with soap and water.

27. The bar chart shows the distances travelled by four trolleys K, L, M and N in 8 seconds.

Arrange the trolleys according to their speed from the fastest to the slowest.

AK, L, M, N

BL, K, N, M

CM, N, K, L

DN, M, L, K

28. The table shows the time taken by four runners to run a 100 meters race.

RunnerKLMN

Time taken (s)20151110

Which of the following statements is not true ?

AK is the slowest runner.

BN is the fastest runner.

CL runs at a lower speed than M.

DThe speed of K is two times that of N.

29. A bus took 3 hours to travel from Kuala Lumpur to Kuantan, a distance of 258 km.

What is the average speed of the bus ?

A65 kilometres per hour

B76 kilometres per hour

C86 kilometres per hour

D129 kilometres per hour

30. Arif drove his car over a distance of 8 km in 30 minutes. At what speed was he travelling ?

A3 km/h

B4 km/h

C10 km/h

D16 km/h

SECTION B

( 20 MARKS )The time suggested for this section is 30 minutes. If you are unable to answer a question, proceed to the next question. Answer all questions.

1. In an investigation, a pupil pushes a block on a non-oily surface. Then the pupil pushes the same block

on an oily surface. The result is as follow: The block moves further on the oily surface.

a) State one inference to explain why the block move further on the oily surface.

.

[ 1 mark ]

b) What are kept the same in this investigation ?

1. .

2. [ 2 marks ]

c) What conclusion can be made from the investigation ?

[ 1 mark ]2. A block of wood is allowed to slide down a smooth slope onto a wooden floor. The block of wood is then allowed to slide down the same slope onto a concrete floor. The block of wood stops at different distances from the foot of the slope as shown in the following figures.

a) What inference can you make about friction between the block of wood and the different floor surfaces ?

.

[ 1 mark ]

b) How can the block of wood be made to move farther from the foot of the slope on the concrete floor ?

.

[ 1 mark ]

c) Write a hypothesis for the experiment.

..

[ 1 mark ]

3. Aqasyah studies how much time it takes for different numbers of people to push a car over a certain

distance.

Aqasyah records the result in the table below.

Number of people2468

Time taken to push the car over 15 metres (s)360300240180

a) Based on the investigation, what must be kept the same to make the test fair ?

[ 1 mark ]

b) What is the trend of change in the time taken to push the car ?

...........

[ 1 mark ]

c) What is

i) changed in the investigation ?

ii) measured in the investigation ?

.

[ 2 marks ]

d) What can you infer about the results obtained by Aqasyah ?

..

[ 1 mark ]

4. Calculate the value in each situation.

a. A car takes 30 minutes to travel 18 km. What is its speed ?

Speed = .. km/h

b. A lorry travels 2.75 hours at a speed of 100 km/h. What is the distance the lorry travels ?

Distance = .. km

c. Mary cycles at a speed of 1.5 m/s to her friends house situated 900 meters away from her

house. How much time does Mary take to reach her friends house ?

Time = minutes

d. A motorcycle travels 120 km in 40 minutes. What is its speed ?

Speed = . km/min[ 4 marks ]

5. The table below shows the distance and the time taken to travel from one place to another place by

three different cars.CarDistance travelled (km)Time taken to travel (hour)

K1000.75

L1001

M1001.25

a) What is the trend in the time taken for the cars to travel ?

..

[ 1 mark ]

b) What is

i) to change :

ii) to measure:

iii) to keep the same: .

[ 3 marks ]

END OF SECTION B

B

A

C

D

C

D

A

B

B

D

A

D

Puan Alia rolls a lump of flour dough until it becomes thin.

P-A ball changes direction when headed.

Q-A ball moves faster when kicked.

R-A ball syops when caught.

B

C

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