NATIONAL SENIOR CERTIFICATE EXAMINATION
NOVEMBER 2019
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 row shows a physical quantity and a correct unit?
Physical quantity Unit
A Force kg.m.s-1
B Efficiency J
C Momentum N.s-1
D Work N.m
1.2 The graph shows how the velocity of an object changes with time.
velocity
0 time
Which one of the following graphs correctly shows how the acceleration of
the object changes with time?
A B
C D
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1.3 An object initially at rest travels a distance d in a time t at a constant
acceleration. What is the time taken for the object to travel 16 d from rest at
the same acceleration?
A 2t
B 4t
C 8t
D 16 t
1.4 Two blocks of weight 7 N and 3 N are attached to two ropes, X and Y as
shown below.
X
7N
Y
3N
The blocks hang vertically at rest. The masses of the ropes are negligible.
What is the tension in rope X and in rope Y?
Tension in X Tension in Y
A 10 N 10 N
B 10 N 3N
C 7N 4N
D 7N 7N
1.5 The mass of a rocket propelled car is approximately equal to the mass of
the fuel in its tank. The rocket is ignited and the car is propelled in a straight
line by a constant force. The effect of air resistance is negligible.
During a test run, fuel is used at a constant rate.
Which statement correctly describes the acceleration of the car during the
test run?
A The acceleration of the car decreases as fuel is used
B The acceleration of the car remains constant as the fuel is used
C The acceleration of the car increases as fuel is used
D The acceleration of the car is zero and the car moves at a constant
velocity
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1.6 Two carts of different masses m and M are connected to each other at rest.
M m
A small explosion causes the carts to move apart from each other. After the
explosion, the cart of mass m moves with velocity v.
M v
m
The change in momentum of mass M is
A – mv
B mv
C – Mv
D Mv
1.7 Two boxes X and Y have the same mass. Box X is lifted through a vertical
height h by a force of magnitude F.
Box Y is pulled up a slope by a force of the same magnitude to reach the
same vertical height, as shown.
h h
F
F
Box X Box Y
Which statement is correct?
Change in gravitational
Amount of work done by F
potential energy of the boxes
A Is the same for box X and box Y Is the same on X and Y
B Is the same for box X and box Y Is more for box Y than for box X
C Is less for box Y than for box X Is less for box Y than for box X
D Is more for box Y than for box X Is more for box Y than for box X
IEB Copyright © 2019
NOVEMBER 2019
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 © 2019 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 row shows a physical quantity and a correct unit?
Physical quantity Unit
A Force kg.m.s-1
B Efficiency J
C Momentum N.s-1
D Work N.m
1.2 The graph shows how the velocity of an object changes with time.
velocity
0 time
Which one of the following graphs correctly shows how the acceleration of
the object changes with time?
A B
C D
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,NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I Page 3 of 16
1.3 An object initially at rest travels a distance d in a time t at a constant
acceleration. What is the time taken for the object to travel 16 d from rest at
the same acceleration?
A 2t
B 4t
C 8t
D 16 t
1.4 Two blocks of weight 7 N and 3 N are attached to two ropes, X and Y as
shown below.
X
7N
Y
3N
The blocks hang vertically at rest. The masses of the ropes are negligible.
What is the tension in rope X and in rope Y?
Tension in X Tension in Y
A 10 N 10 N
B 10 N 3N
C 7N 4N
D 7N 7N
1.5 The mass of a rocket propelled car is approximately equal to the mass of
the fuel in its tank. The rocket is ignited and the car is propelled in a straight
line by a constant force. The effect of air resistance is negligible.
During a test run, fuel is used at a constant rate.
Which statement correctly describes the acceleration of the car during the
test run?
A The acceleration of the car decreases as fuel is used
B The acceleration of the car remains constant as the fuel is used
C The acceleration of the car increases as fuel is used
D The acceleration of the car is zero and the car moves at a constant
velocity
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, NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I Page 4 of 16
1.6 Two carts of different masses m and M are connected to each other at rest.
M m
A small explosion causes the carts to move apart from each other. After the
explosion, the cart of mass m moves with velocity v.
M v
m
The change in momentum of mass M is
A – mv
B mv
C – Mv
D Mv
1.7 Two boxes X and Y have the same mass. Box X is lifted through a vertical
height h by a force of magnitude F.
Box Y is pulled up a slope by a force of the same magnitude to reach the
same vertical height, as shown.
h h
F
F
Box X Box Y
Which statement is correct?
Change in gravitational
Amount of work done by F
potential energy of the boxes
A Is the same for box X and box Y Is the same on X and Y
B Is the same for box X and box Y Is more for box Y than for box X
C Is less for box Y than for box X Is less for box Y than for box X
D Is more for box Y than for box X Is more for box Y than for box X
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