NATIONAL SENIOR CERTIFICATE EXAMINATION
NOVEMBER 2021
PHYSICAL SCIENCES: PAPER I
Time: 3 hours 200 marks
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
1. This question paper consists of 16 pages, an Answer Sheet of 2 pages (i–ii), and a
Data Sheet of 2 pages (i–ii). Please check that your question paper is complete.
2. Answer ALL the questions.
3. Read the questions carefully.
4. Use the data and formulae whenever necessary.
5. Start each question on a new page.
6. Number your answers as the questions are numbered.
7. Show your working in all calculations.
8. Units need not be included in the working of calculations, but appropriate units should
be shown in the answer.
9. Answers must be expressed in decimal format, not left as proper fractions.
10. Where appropriate, express answers to TWO decimal places.
11. It is in your own interest to write legibly and to present your work neatly.
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QUESTION 1 MULTIPLE CHOICE
Answer these questions on the multiple-choice answer sheet on the inside
front cover of your Answer Book. Make a cross (X) in the box corresponding
to the letter that you consider to be correct.
1.1 Which unit listed below can be expressed as kg∙m2∙s-2?
A newton per second
B newton
C joule
D watt
1.2 A trolley X with a mass m is travelling at velocity v. It is brought to rest by a
braking force F over a distance d. An identical trolley Y, but with twice the
mass of X, has the same initial velocity v and is brought to rest by the same
force F. What will the stopping distance of Y be?
A d
B 2d
1
C d
2
D 4d
1.3 An object moves 12 m south from its starting point in a time of 6 s, then 24 m
north in a time of 10 s.
Which of the following correctly shows the magnitudes of its average speed
and its average velocity?
Average speed (m∙s-1) Average velocity (m∙s-1)
A 2,25 0,75
B 2,25 2,20
C 2,20 2,20
D 2,20 0,75
1.4 A car has an ornament hanging from the inside mirror. The position of the
ornament when the car is travelling at a very high constant speed is:
velocity of car
A
B D front window
C
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1.5 A child climbs a door frame using the friction between the inside of the frame
and the child's hands and feet, as shown in the diagram below. The mass of
the child is 50 kg and the friction between the frame and each hand and foot
is identical.
The angle made by the child's arms and legs to the vertical is 60° when they
are stationary.
60°
60°
What is the friction between the door frame and each hand or foot?
245
A
4
490
B
4
849
C
4
224
D
4
1.6 Two insulated spheres carry charges of + 2Q and – 4Q. They are a distance
x apart. Each sphere experiences a force F. They are brought together to
touch and then separated to half the original distance. What will the new force
experienced by the spheres be?
A 2F
B 4F
1
C F
2
1
D F
4
1.7 In the circuit shown alongside, the switch is open. The reading on the
voltmeter is: 10 Ω
A 0V
B 6V
C 0,6 V 12 V V
D 12 V
10 Ω
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1.8 Three circuits with identical resistors are shown below. The cells connected
to the circuits are identical and the internal resistance of these cells can be
ignored. Rank the readings on the voltmeters shown from largest to smallest.
V4
V1 V2 V3
V5
A V1 > V2 = V3 > V4 = V5
B V2 > V3 > V1 > V4 > V5
C V2 = V3 > V1 > V4 = V5
D V1 = V2 = V3 > V4 = V5
1.9 A current carrying conductor is placed into a magnetic field, as shown in the
diagram below.
I
magnetic
field
The conductor experiences a force:
A to the right
B to the left
C out of the page
D into the page
1.10 Two coils of wire, each wrapped on an iron core, are placed next to each
other as shown. Switch S is open.
Iron Iron
core core
S
When the switch S is closed, the force between the coils will:
A change direction (from attraction to repulsion or repulsion to attraction)
B decrease
C increase
D no longer be zero
[20]
IEB Copyright © 2021
NOVEMBER 2021
PHYSICAL SCIENCES: PAPER I
Time: 3 hours 200 marks
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
1. This question paper consists of 16 pages, an Answer Sheet of 2 pages (i–ii), and a
Data Sheet of 2 pages (i–ii). Please check that your question paper is complete.
2. Answer ALL the questions.
3. Read the questions carefully.
4. Use the data and formulae whenever necessary.
5. Start each question on a new page.
6. Number your answers as the questions are numbered.
7. Show your working in all calculations.
8. Units need not be included in the working of calculations, but appropriate units should
be shown in the answer.
9. Answers must be expressed in decimal format, not left as proper fractions.
10. Where appropriate, express answers to TWO decimal places.
11. It is in your own interest to write legibly and to present your work neatly.
IEB Copyright © 2021 PLEASE TURN OVER
,NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I Page 2 of 16
QUESTION 1 MULTIPLE CHOICE
Answer these questions on the multiple-choice answer sheet on the inside
front cover of your Answer Book. Make a cross (X) in the box corresponding
to the letter that you consider to be correct.
1.1 Which unit listed below can be expressed as kg∙m2∙s-2?
A newton per second
B newton
C joule
D watt
1.2 A trolley X with a mass m is travelling at velocity v. It is brought to rest by a
braking force F over a distance d. An identical trolley Y, but with twice the
mass of X, has the same initial velocity v and is brought to rest by the same
force F. What will the stopping distance of Y be?
A d
B 2d
1
C d
2
D 4d
1.3 An object moves 12 m south from its starting point in a time of 6 s, then 24 m
north in a time of 10 s.
Which of the following correctly shows the magnitudes of its average speed
and its average velocity?
Average speed (m∙s-1) Average velocity (m∙s-1)
A 2,25 0,75
B 2,25 2,20
C 2,20 2,20
D 2,20 0,75
1.4 A car has an ornament hanging from the inside mirror. The position of the
ornament when the car is travelling at a very high constant speed is:
velocity of car
A
B D front window
C
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,NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I Page 3 of 16
1.5 A child climbs a door frame using the friction between the inside of the frame
and the child's hands and feet, as shown in the diagram below. The mass of
the child is 50 kg and the friction between the frame and each hand and foot
is identical.
The angle made by the child's arms and legs to the vertical is 60° when they
are stationary.
60°
60°
What is the friction between the door frame and each hand or foot?
245
A
4
490
B
4
849
C
4
224
D
4
1.6 Two insulated spheres carry charges of + 2Q and – 4Q. They are a distance
x apart. Each sphere experiences a force F. They are brought together to
touch and then separated to half the original distance. What will the new force
experienced by the spheres be?
A 2F
B 4F
1
C F
2
1
D F
4
1.7 In the circuit shown alongside, the switch is open. The reading on the
voltmeter is: 10 Ω
A 0V
B 6V
C 0,6 V 12 V V
D 12 V
10 Ω
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, NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I Page 4 of 16
1.8 Three circuits with identical resistors are shown below. The cells connected
to the circuits are identical and the internal resistance of these cells can be
ignored. Rank the readings on the voltmeters shown from largest to smallest.
V4
V1 V2 V3
V5
A V1 > V2 = V3 > V4 = V5
B V2 > V3 > V1 > V4 > V5
C V2 = V3 > V1 > V4 = V5
D V1 = V2 = V3 > V4 = V5
1.9 A current carrying conductor is placed into a magnetic field, as shown in the
diagram below.
I
magnetic
field
The conductor experiences a force:
A to the right
B to the left
C out of the page
D into the page
1.10 Two coils of wire, each wrapped on an iron core, are placed next to each
other as shown. Switch S is open.
Iron Iron
core core
S
When the switch S is closed, the force between the coils will:
A change direction (from attraction to repulsion or repulsion to attraction)
B decrease
C increase
D no longer be zero
[20]
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