7/31/2019 MYE_p1_f4_2012.docx

1/25

SULIT 4531

2

SECTION A

1 Which of the following is not a base unit.

A Joule

B Ampere

C Kilogram

D Second

2 108 km h-1

A 20 ms-1

B 30 ms-1

C 50 ms-1

D 60 ms-1

3 The graph shows the relationship between v and t.

The relationship between v and t can be given by

A v = t + 5

B v = t + 1

C v = - t + 5

D v = - t + 1

7/31/2019 MYE_p1_f4_2012.docx

2/25

SULIT 4531

3

4 The diagram shows a micrometer screw gauge used to measure the thickness of 100

sheets of paper.

What is the thickness of 1 piece of paper in mm?

A 0.0432

B 0.0438

C 0.0482

D 0.0488

7/31/2019 MYE_p1_f4_2012.docx

3/25

SULIT 4531

4

5 The diagram below shows a track for a 200 m event. An athlete takes 25 s to finish the

race.

What is the velocity of the athlete in ms-1

?

A

B

C

D

6 Which of the following ticker tapes show acceleration ?

7/31/2019 MYE_p1_f4_2012.docx

4/25

SULIT 4531

5

7 The diagram shows three forces P, Q and R acting on an object O. The object is in

equilibrium state.

Which vector diagram shows the correct triangle of forces ?

7/31/2019 MYE_p1_f4_2012.docx

5/25

SULIT 4531

6

8 The diagram below shows a graph.

Which of the following is true about the graph.

A H is the manipulated variable.

B K is the constant variable.

C H decreases linearly with K.

D H is directly proportional to K.

9 The relationship between the stretching force, F , and extensionx, of an elastic material

is given by the equation:

where kis a constant.

What is the base unit ofk?

A m

B kgm2s

-2

C kg s-2

D kg ms-2

10 When a car is travelling with a constant velocity, its acceleration is

A decreasing

B equal to zero

C increasing

D constant

7/31/2019 MYE_p1_f4_2012.docx

6/25

SULIT 4531

7

11 The diagram below shows a box of mass 5 kg being pulled by a force of 100 N at an

angle of 60

to the horizontal. The frictional force acting on the box is 10 N.

Calculate the acceleration of the box.

A 5.0 ms-2

B 8.0 ms-2

C 10.0 ms-2

D 15.3 ms-2

12 Which of the following describes an elastic collision between two objects ?

A Total momentum is conserved.

B Total kinetic energy is conserved.

C Total kinetic energy and momentum are conserved.

D Total energy, momentum and kinetic energy is conserved.

7/31/2019 MYE_p1_f4_2012.docx

7/25

SULIT 4531

8

13 The diagram shows a trolley of mass 500 g sliding down a smooth curved ramp.

What is the speed, v of the trolley?

A 4.0 ms-1

B 17.3 ms-1

C 33.5 ms-1

D 75.0 ms-1

14 Which object has the highest inertia ?

7/31/2019 MYE_p1_f4_2012.docx

8/25

SULIT 4531

9

15 The diagram shows a motor lifting a load of mass 8.0 kg. The motor takes 4 s to lift the

load to a height of 0.5 m.

What is the power of the motor ?

A 4 W

B 10 W

C 16 W

D 40 W

16 The diagram shows a student running up a staircase at a constant speed.

Which physical quantity increases as the student runs up the stairs ?

A Inertia of the student.

B Momentum of the student.

C Kinetic energy of the student.

D Gravitational potential energy of the student.

7/31/2019 MYE_p1_f4_2012.docx

9/25

SULIT 4531

10

17 The diagram below shows a parachutist landing with his legs bent.

Why does the parachutist bend his legs ?

A To lengthen the time of impact of his feet with the ground.

B To shorten the time of impact of his legs with the ground.

C To reduce the weight of the parachute on his shoulders.

D To increase the weight of his body when landing.

7/31/2019 MYE_p1_f4_2012.docx

10/25

SULIT 4531

11

18 The diagram below shows two spheres, P and Q.

Which of the following is true when P and Q are free falling from different heights.

A The velocities of P and Q are the same.

B The acceleration of P and Q are the same.

C The momentum of P and Q are the same.

D The gravitational forces acting on P ad Q are the same.

19 The diagram below shows a tug-o-war match between Team A and Team B.

What is the resultant force acting on the rope ?

A 150 N acting towards Team A.

B 150 N acting towards Team B.

C 350 N acting towards Team A.

D 350 N acting towards Team B.

7/31/2019 MYE_p1_f4_2012.docx

11/25

SULIT 4531

12

20 The diagram shows a cyclist riding along a hilly road. At which position does the

cyclist have the highest kinetic energy ?

7/31/2019 MYE_p1_f4_2012.docx

12/25

SULIT 4531

13

21 The diagram below shows a reading of a weighing machine when the lift is stationary.

What is the reading on the weighing scale if the lift experiences free fall.

7/31/2019 MYE_p1_f4_2012.docx

13/25

SULIT 4531

14

22 Which statement is correct about inertia ?

A Inertia depends on the size of the object.

B Inertia of the object on earth is greater than the inertia on the moon.

C An object with less mass is easier to move.

D An object that moves easily is harder to stop.

23 A toy car with a mass of 2 kg is moving with a velocity of 3 ms-1

. It collides with

another toy car with a mass of 3 kg that is moving with a velocity of 2 ms-1

in the same

direction. After the collision both cars move together. Determine their velocity after the

collision.

A 1.2 ms-1

.

B 2.4 ms-1

.

C 2.0 ms-1

.

D 2.8 ms-1

.

24 Which applies the principle of conservation of momentum in the case of an explosion ?

A Launching of a rocket.

B A snooker ball hitting another.

C A game of bowling.

D A bullet penetrating a target.

25 The following materials can reduce impulsive force except

A airbag of a car.

B polystyrene packing.

C mattress for a high jump.

D pestle and mortar.

26 A car with a mass of 800 kg is travelling with a velocity of 72 km h-1. What is the

kinetic energy of the car ?

7/31/2019 MYE_p1_f4_2012.docx

14/25

SULIT 4531

15

A 16 000 J.

B 57 600 J.

C 160 000 J.

D 320 000 J.

27 A car moving with a velocity of 30 ms-1

decelerates uniformly and stops in 5 s. What is

the deceleration of the car ?

A 3 ms-1

.

B 6 ms-1

.

C 9 ms-1.

D 12 ms-1

.

28 An apple falls from a tree and hits the ground in 0.8 s. What is the speed of the apple

when it hits the ground ? [ Take g = 10 ms-2

]

A 4 ms-1

.

B 6 ms-1.

C 8 ms-1

.

D 10 ms-1

.

29 Two objects of different masses are released from the same height. Which of the

following physical quantities is the same for the two objects ?

[ Neglect air resistance ]

A Kinetic energy.

B Gravitational potential energy.

C Time taken to reach the floor.

D Momentum.

30 Which of the following is not a safety feature in a vehicle ?

A Air bag.

7/31/2019 MYE_p1_f4_2012.docx

15/25

SULIT 4531

16

B Seat belt.

C Air conditioning.

D Crushable bonnet.

7/31/2019 MYE_p1_f4_2012.docx

16/25

SULIT 4531

17

SECTION B

1 The diagram shows an object falling through air. The object is acted on by two forcesA

andB whose directions are shown by the arrows. The value of each force is shown.

(a) Name the type of force represented by:

(i) A..........................................................................................................

[1 mark]

(ii) B.........................................................................................................

[1 mark]

(b) State the size and direction of the resultant of forcesA andB.

Size ...........................................................................................................

[1 mark]Direction ...................................................................................................

[1 mark]

(c) The mass of the falling object is 6.0 kg. Calculate its acceleration.

...................................................................................................................

...................................................................................................................

...................................................................................................................

[2 marks]

7/31/2019 MYE_p1_f4_2012.docx

17/25

SULIT 4531

18

2 (a) A train moves with a constant velocity of 30 m/s for 10 s before decelerating

uniformly to rest in a further 15 s.

Draw a velocitytime graph on the axes below.

[2 marks]

(b) State the property of a velocitytime graph that can be used to determine the

distance travelled by the train.

.........................................................................................................................

[1 mark ]

(c) Calculate the distance travelled by the train.

.........................................................................................................................

.........................................................................................................................

.........................................................................................................................

[3 marks]

7/31/2019 MYE_p1_f4_2012.docx

18/25

SULIT 4531

19

3 The picture shows two ice skaters A and B, facing each other. They are at rest on the

ice.

(a) What is the total momentum of the two skaters ?

.........................................................................................................................

[1 mark]

(b) Is momentum a scalar or vector quantity?

.........................................................................................................................

[1 mark]

(c) The two skaters push away from each other and move in opposite directions.

(i) Skater B has a mass of 30 kg and moves to the right with a speed of

3.2 ms-1

. Calculate the momentum of skater B.

.................................................................................................................

.................................................................................................................

.................................................................................................................

[3 marks]

(ii) What is the momentum of skater A.

.................................................................................................................

[1 mark]

(iii) Skater A has a mass of 40 kg. Calculate the velocity of skater A.

7/31/2019 MYE_p1_f4_2012.docx

19/25

SULIT 4531

20

.................................................................................................................

.................................................................................................................

.................................................................................................................

[2 marks]

7/31/2019 MYE_p1_f4_2012.docx

20/25

SULIT 4531

21

4 The graph below shows how the velocity of the car changes over a certain period of

time.

(a) On a velocity-time graph, the gradient of the graph represents

...............................................................................................................................

[1 mark]

(b) Determine the acceleration of the car in section I of the graph.

...............................................................................................................................

...............................................................................................................................

[2 marks]

(c) Determine the distance travelled by the car.

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

[2 marks]

(d) Find the average velocity of the car.

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

[2 marks]

7/31/2019 MYE_p1_f4_2012.docx

21/25

SULIT 4531

22

5 The picture shows a forklift truck lifting a crate.

(a) The mass of the crate is 1200 kg and it is lifted at a steady speed of 0.20 m/s.Calculate the kinetic energy of the crate as it is being lifted.

...............................................................................................................................

...............................................................................................................................

[2 marks]

(b) The forklift truck lifts the crate 2.8 m vertically.(i) Calculate the gravitational potential energy gained by the crate.

....................................................................................................................

...................................................................................................................

[2 marks]

(ii) Calculate the time taken to lift the crate 2.8 m.

....................................................................................................................

....................................................................................................................

[2 marks]

(iii) Calculate the output power of the forklift truck.

....................................................................................................................

....................................................................................................................

[2 marks]

7/31/2019 MYE_p1_f4_2012.docx

22/25

SULIT 4531

23

6

A 4 kg trolley is connected by a rope to a load of mass 6 kg. The friction between the

table and the trolley is 15 N. The load is then released. Assuming that the pulley is

smooth and the rope is of negligible mass, find

(a) the acceleration of the system

..............................................................................................................................

..............................................................................................................................

..............................................................................................................................

[3 marks]

(b) the tension of the rope

............................................................................................................................

............................................................................................................................

............................................................................................................................

[2 marks]

6 kg

4 kg

7/31/2019 MYE_p1_f4_2012.docx

23/25

SULIT 4531

24

SECTION C

A student carried out an experiment to investigate the relationship between the period, T, and

the length of the pendulum, l, of a simple pendulum. A student varied the length of the

pendulum and the pendulum was displaced to an initial angle and released. The pendulum

swung back and forth with periodic motion and the period T, was determined using a

stopwatch.

The result of the experiment are shown in the graph ofT2

against l in the figure below. The

student intended to use this experiment to determine the acceleration due to gravity, g.

7/31/2019 MYE_p1_f4_2012.docx

24/25

SULIT 4531

25

(a) State the relationship between T2 and l.

................................................................................................................................

[2 marks]

(b) A simple pendulum has a period of 1.3s. Using the graph ofT2 against l ,

determine the length of the pendulum. Show on the graph how you determined

the length.

Length of pendulum =...............................................................

[3 marks]

(c) The square of the period T2, is given by the formula:

( )

If , then , where m is the gradient of the graph T2 against l.

(i) Calculate the gradient, m, of the graph T2 against l. Show on the graph how

you determined m.

m = ................................................

[3 marks]

(ii) The acceleration due to gravity, g, in ms-2

, is given by the equation:

Calculate the value of the gravitational acceleration, g, of the pendulum.

[2 marks]

7/31/2019 MYE_p1_f4_2012.docx

25/25

SULIT 4531

Prepared by: Checked by: Verified by:

.......................... .................... ..................

Chandini Joseph Pn Sanizah Senior Asst.