# Physical Sciences Grade 12 P1 Gauteng June 2025 QP (Eng)

> Grade 12 Physical Sciences Paper 1 question paper from the Gauteng June Exam 2025 (English), 18 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/physical-sciences-p1-english-june-2025-question-paper/e5e83a65-f089-49d5-95ca-94aff286cb8d
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 12
- Language: English
- Document type: Question paper
- Year: 2025
- Exam period: Gauteng June Exam
- Paper: 1
- Curriculum: CAPS
- Pages: 18

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## About this document

Physical Sciences · Grade 12 · Gauteng June Exam · 2025 · English. Question paper, 18 pages. Read online or download the PDF.

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## Document text

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### Page 1

JUNE EXAMINATION
     GRADE 12

          2025

PHYSICAL SCIENCES (PHYSICS)

         (PAPER 1)

                       TIME:     3 hours

                       MARKS: 150

                       15 pages + 3 data sheets

                                   Please turn over

### Page 2

PHYSICAL SCIENCES                               2
                                       (PAPER 1)                       GR12 0625

INSTRUCTIONS AND INFORMATION

1.    This question paper consists of 9 questions. Answer ALL the questions in the
      ANSWER BOOK.

2.    Start EACH question on a NEW page in the ANSWER BOOK.

3.    Number the answers correctly according to the numbering system used in this
      question paper.

4.    Leave ONE line open between two subquestions, e.g. between QUESTION 2.1
      and QUESTION 2.2.

5.    You may use a non-programmable calculator.

6.    You may use appropriate mathematical instruments.

7.    Show ALL formulae and substitutions in ALL calculations.

8.    Round-off your FINAL numerical answers to a minimum of TWO decimal
      places.

9.    Give brief discussions, etc. where required.

10.   You are advised to use the attached DATA SHEETS.

11.   Write neatly and legibly.

                                                                              Please turn over

### Page 3

PHYSICAL SCIENCES                              3
                                                (PAPER 1)                   GR12 0625

QUESTION 1: MULTIPLE-CHOICE QUESTIONS

Various options are provided as possible answers to the following questions. Each question
has only ONE correct answer. Choose the answer and write only the letter (A – D) next to
the question numbers (1.1 to 1.10) in the ANSWER BOOK, e.g. 1.11 E.

1.1   Which of the following forces always acts perpendicular to the surface on which a
      body is placed?

      A                 Tension
      B                 Frictional force
      C                 Normal force
      D                 Gravitational force                                                        (2)

1.2   A car of mass m moves along a straight line at a constant velocity of v in an
      easterly direction. The velocity of the car decreases to a third of its original speed
      in t seconds as shown below. The graph is not drawn to scale.

                                      VELOCITY-TIME GRAPH FOR CAR

       Velocity m·s-1

                                                Time (s)

      What will be the change in momentum of the car?

      A                 ଵ
                            mv east
                        ଷ

      B                 ଵ
                            mv west
                        ଷ

      C                 ଶ
                            mv east
                        ଷ

      D                 ଶ
                            mv west
                        ଷ
                                                                                                   (2)

                                                                                    Please turn over

### Page 4

PHYSICAL SCIENCES                                     4
                                         (PAPER 1)                          GR12 0625

1.3   Object Y exerts a gravitational force of 1 000 N on object Z when the distance
      between the centres of the two objects is r. The two objects each have a mass of m.

      Which of the changes below will increase the gravitational force to 4 000 N?

      A     Double the distance between their centres.
      B     Halve the distance between their centres.
      C     Halve the mass of both objects.
      D     Double the mass of only object Y.                                                       (2)

1.4   A ball is kicked across a floor and it comes to a standstill after t seconds.

      Which of the following statements correctly describes the total mechanical energy
      and the net work done on the ball?

            TOTAL MECHANICAL
                                          NET WORK DONE
                 ENERGY
       A      Not conserved                   Negative
       B      Conserved                       Negative
       C      Not conserved                   Positive
       D      Conserved                       Positive                                              (2)

                                                                                      Please turn over

### Page 5

PHYSICAL SCIENCES                                         5
                                           (PAPER 1)                            GR12 0625

1.5   A crate is given an initial velocity, and it slides up a frictionless incline until it comes
      to a stop.

      Which of the following graphs shows the CORRECT relationship between the
      kinetic energy (Ek) and the potential energy (Ep) of the crate?

          A                                             B

          C                                              D

                                                                                                         (2)

1.6   For light, a red shift indicates the light source moves …

      A       away from you.
      B       towards you.
      C       at right angles to you.
      D       parallel to you.                                                                           (2)

                                                                                        Please turn over

### Page 6

PHYSICAL SCIENCES                                      6
                                       (PAPER 1)                          GR12 0625

1.7   Two point charges of +7 nC and -5 nC are brought together until they touch.
      Immediately after that they return to their original positions.

      Which field pattern correctly represents the charges when they are back in their
      original positions?

      A                                          B

      C                                          D

                                                                                                  (2)

1.8   A non-ohmic resistor can be described as a resistor for which …

      A    Ohm’s law is valid.
      B    the current-potential difference graph produces a straight line.
      C    the resistance does not vary with a change in temperature.
      D    the resistance is not constant and varies with the applied potential difference.       (2)

                                                                                  Please turn over

### Page 7

PHYSICAL SCIENCES                              7
                                         (PAPER 1)                      GR12 0625

1.9    Four identical resistors are connected as shown below. Which connection will
       result in a total resistance of 4 Ω?

       A

       B

       C

       D

                                                                                             (2)

1.10   A kilowatt hour refers to:

       A     The use of electrical appliances
       B     The power of electrical appliances
       C     One kilowatt of electricity used for one hour
       D     The cost of electricity specifications                                          (2)
                                                                                            [20]

                                                                               Please turn over

### Page 8

PHYSICAL SCIENCES                                     8
                                         (PAPER 1)                          GR12 0625

QUESTION 2      (Start on a new page.)

A person pulls a block of mass 12 kg to the right using a light inextensible rope T. The
block is pulled from point A to B at an angle of 40o between the rope and the horizontal
surface. The coefficient of kinetic friction between the block and the surface is 0,31. The
block is pulled at a CONSTANT VELOCITY of 10 m∙s-1, as shown in the diagram below.

2.1   Define the term kinetic frictional force.                                                     (2)

2.2   Draw a labelled, free-body diagram of all the forces acting on the 12 kg block
      while it is moving at a constant velocity.                                                    (4)

2.3   Calculate the magnitude of the tension in the rope.                                           (5)

2.4   The block is moved a horizontal distance of 24 m from point A to B.

      2.4.1     Calculate the time it will take the block to reach B.                               (3)

      2.4.2     If the block’s velocity is increased to a constant velocity of 20 m∙s-1, how
                will the frictional force be affected? Write only INCREASES,
                DECREASES or REMAINS THE SAME.                                                      (1)

2.5   The angle between the rope and the horizontal surface is increased to 50o.

      2.5.1     What will be the effect on the kinetic frictional force acting on the block?
                Write only INCREASES, DECREASES or REMAINS THE SAME.                                (1)

      2.5.2     Explain the answer to QUESTION 2.5.1.                                               (3)
                                                                                                   [19]

                                                                                    Please turn over

### Page 9

PHYSICAL SCIENCES                                   9
                                        (PAPER 1)                         GR12 0625

QUESTION 3       (Start on a new page.)

A rocket of total mass m is launched from the surface of the Earth. The initial weight of
the rocket is 5,38 x 106 N. The mass of the rocket decreases due to the loss of fuel that
is used to propel the rocket. When the distance between the centre of the rocket and
the surface of the Earth is 9 000 m, the rocket experiences a gravitational force of
5,04 x 106 N. The diagram below is not drawn to scale.

3.1   State Newton’s Law of Universal Gravitation in words.                                     (2)

3.2   Calculate the:

      3.2.1    Total mass m of the rocket before it is launched                                 (2)

      3.2.2    Mass of the rocket when it is 9 000 m from the surface of the Earth              (5)

      3.2.3    Mass of the fuel that was consumed when the rocket reached 9 000 m
               from the surface of the Earth                                                    (2)

3.3   The rocket is on its way straight to the moon.

      What will happen to the gravitational force between the Moon and the rocket as
      the distance between the Earth and the rocket increases?

      Write only INCREASES, DECREASES or REMAINS THE SAME.                                   (2)
                                                                                            [13]

                                                                                  Please turn over

### Page 10

PHYSICAL SCIENCES                              10
                                           (PAPER 1)                       GR12 0625

QUESTION 4       (Start on a new page.)

A hot-air balloon moves upwards at a constant velocity when a block B
is dropped from the side of the balloon and falls to the ground. The
balloon is 50 m above the ground when the object is dropped.

The graphs below show the motion of both the balloon and the block B.

The graphs are not drawn to scale. Ignore all effects of air resistance.

Use upwards as positive in all calculations.

               VELOCITY-TIME GRAPH FOR BALLOON AND BLOCK B

                                                                      Hot-air balloon

                                                                      time (s)

                       Velocity
                                                                      Block B

4.1    Which one, the balloon or block B, is in freefall?

       Give a reason for the answer.                                                            (2)

4.2    Using ONLY equations of motion, calculate the following values:

       4.2.1   The time t1                                                                      (3)

       4.2.2   The velocity v of block B                                                        (3)

       4.2.3   The time t2                                                                      (3)

4.3    Sketch a position-time graph of block B from the moment it is dropped until it
       reaches the ground. Use the ground as zero reference point.
       Clearly indicate the following values on the graph:
        The initial height
        The time at maximum height
        The time when block B reaches the ground
                                                                                                (5)
                                                                                               [16]

                                                                                 Please turn over

### Page 11

PHYSICAL SCIENCES                                  11
                                           (PAPER 1)                         GR12 0625

QUESTION 5       (Start on a new page.)

The vector diagrams below show the momentums of car A, mass 2 000 kg, which is
traveling to the right, before and after a head-on collision with stationary car B. The collision
lasted 0,5 seconds. After the collision, car B moves to the right with a speed of 20 m∙s-1.

The diagrams below are not drawn to scale.

          VECTOR DIAGRAM FOR CAR A BEFORE AND AFTER COLLISION

                        pi = 30 000 kg∙m∙s-1 right

        pf = 10 000 kg∙m∙s-1 right

5.1    State the principle of conservation of linear momentum in words.                                 (2)

5.2    Calculate the:

       5.2.1   Velocity of car A before the collision                                                   (3)

       5.2.2   Mass of car B                                                                            (4)

5.3    Draw a labelled vector diagram showing the magnitude and direction of the change
       in momentum of car A.                                                                            (2)

5.4    Calculate the magnitude of the net force that car A exerts on car B.                             (3)

5.5    Use the impulse-momentum theorem to explain how an airbag, which inflates
       between the driver and the steering wheel of a car during a collision, protects the
       driver.                                                                                          (3)

                                                                                     Please turn over

### Page 12

PHYSICAL SCIENCES                                  12
                                         (PAPER 1)                          GR12 0625

QUESTION 6      (Start on a new page.)

A 20 kg box is initially at rest at point Y on a rough horizontal surface. The box is pulled to
the right by a constant force of 100 N, parallel to the surface. The box is moved a horizontal
distance of 4 m and experiences a frictional force of 65 N.

6.1    Define the term non-conservative force.                                                   (2)

6.2    Name the non-conservative force(s) acting on the 20 kg box.                               (2)

6.3    Using ENERGY PRINCIPLES ONLY, calculate the speed of the box at point Z.                  (5)

6.4    Calculate the average power dissipated by the 100 N force between point Y and
       point Z.                                                                                  (3)

6.5    The box is now pulled upwards by a 100 N force on the original surface which is
       now inclined at an angle as shown in the diagram below.

        6.5.1   Draw a labelled, free-body diagram, showing all the CONSERVATIVE
                FORCES acting on the 20 kg box.                                                  (2)

        6.5.2   Will the box still have the same speed after 4 m as in QUESTION 6.3?
                Write only YES or NO. Give a reason for the answer.                           (2)
                                                                                             [16]

                                                                                   Please turn over

### Page 13

PHYSICAL SCIENCES                                   13
                                         (PAPER 1)                        GR12 0625

QUESTION 7 (Start on a new page.)

A hawk emits a sound at a frequency of 90 Hz. The speed of sound in air is taken
as 340 m.s-1.

7.1   State the Doppler effect in words.                                                          (2)

7.2   A stationary observer hears the sound at 88 Hz. Is the hawk flying TOWARDS or
      AWAY from the observer?                                                                     (1)

7.3   Calculate the speed at which the hawk is flying.                                            (5)
                                                                                                  [8]
QUESTION 8 (Start on a new page.)

Three point charges, A, B and C, are placed as shown in the diagram below.

8.1   State Coulomb’s law in words.                                                               (2)

8.2   The net force on charge A due to the charges B and C is 0,866 N. Calculate the
      distance d as indicated in the sketch above.                                                (5)

8.3   Charge C is now removed. Point P is 0,2 m to the right of charge B.

      8.3.1    Define electric field at a point.                                                  (2)

      8.3.2    Draw a labelled vector diagram of the electric field at point P as a result
               of charges A and B.                                                                (2)

                                                                                  Please turn over

### Page 14

PHYSICAL SCIENCES                                     14
                                                                 (PAPER 1)                          GR12 0625

      8.3.3                             Calculate the magnitude of the net electric field at point P.                        (4)

      8.3.4                             If point P was between charges A and B, the net electric field would
                                        never be equal to zero at any point.

                                        Explain the validity of this statement.                                              (2)

8.4   The relationship between the electrostatic force and a charge is illustrated in the
      graph below. During this experiment, the second charge and the distance
      between the two charges are kept constant.

                                            ELECTROSTATIC FORCE-CHARGE GRAPH

              Electrostatic force (N)

                                                             Charge (x 10-6 C)

      8.4.1                              What mathematical relationship between the electrostatic force and the
                                         charge can be deduced from the graph?                                               (1)

      8.4.2                              Use the information in the graph to calculate the magnitude of the electric
                                         field around the charge when it experiences a force of 0,005 N.                     (3)
                                                                                                                            [21]

                                                                                                           Please turn over

### Page 15

PHYSICAL SCIENCES                                    15
                                         (PAPER 1)                            GR12 0625

QUESTION 9        (Start on a new page.)

CIRCUIT A and CIRCUIT B are connected as shown below. In both circuits, the same
battery is used, and all resistors are identical with a resistance of 3 Ω each. The battery
has an emf and internal resistance of unknown values. Voltmeter and ammeter
readings are indicated in the diagrams below.

                  CIRCUIT A                                         CIRCUIT B

9.1    Define power.                                                                               (2)

9.2    For CIRCUIT A:

       9.2.1     What would be the current through resistor R2?                                    (2)

       9.2.2     Calculate the power dissipated by both R2 and R3.                                 (3)

9.3    For CIRCUIT B:

       9.3.1     Calculate the energy used for resistor R1 if the current flows for
                 10 minutes.                                                                       (3)

       9.3.2     How would the current be affected if R1 burnt out and was not
                 removed?

                 Write only INCREASES, DECREASES or REMAINS THE SAME.
                 Give a reason for the answer.                                                     (2)

9.4    Define the term emf.                                                                        (2)

9.5    Resistor R1 is replaced by a new 3 Ω resistor. Calculate the value of the emf
       and the internal resistance of the battery used in CIRCUIT A and CIRCUIT B.              (6)
                                                                                               [20]

                                                                                  TOTAL:       150

                                                                                               END

### Page 16

PHYSICAL SCIENCES                        1
                                     (PAPER 1)                    GR12 0625

                       DATA FOR PHYSICAL SCIENCES GRADE 12
                                 PAPER 1 (PHYSICS)

                  GEGEWENS VIR FISIESE WETENSKAPPE GRAAD 12
                             VRAESTEL 1 (FISIKA)

     TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES

         NAME/NAAM                 SYMBOL/SIMBOOL    VALUE/WAARDE
Acceleration due to gravity
                                         g                  9,8 m·s-2
Swaartekragversnelling
Universal gravitational constant
                                         G          6,67 x 10-11 N·m2·kg-2
Universele gravitasiekonstante
Radius of the Earth
                                         RE               6,38 x 106 m
Radius van die Aarde
Mass of the Earth
                                         ME              5,98 x 1024 kg
Massa van die Aarde
Speed of light in a vacuum
                                         c               3,0 x 108 m·s-1
Spoed van lig in ’n vakuum
Planck's constant
                                         h               6,63 x 10-34 J·s
Planck se konstante
Coulomb's constant
                                         k           9,0 x 109 N·m2·C-2
Coulomb se konstante
Charge on electron
                                         e                1,6 x 10-19 C
Lading op elektron
Electron mass
                                         me              9,11 x 10-31 kg
Elektronmassa

### Page 17

PHYSICAL SCIENCES                                          2
                                                          (PAPER 1)                                    GR12 0625

TABLE 2: FORMULAE/TABEL 2: FORMULES

MOTION/BEWEGING

 v f  v i  a t                                            Δx  v i Δt  21 at 2 or/of Δy  v i Δt  21 a  t 2
                                                                   v vf                 v vf 
   2       2                        2
 v f  v i  2ax or/of v f  v i  2ay
                                           2
                                                             Δx   i      Δt or/of Δy   i      Δt
                                                                   2                     2 

FORCE/KRAG

Fnet  ma                                                   p  mv

 f smax   sN                                               fk   kN
Fnet t  p
                                                             w = mg
 p  mv f  mv i
          m 1m 2                            m 1m 2                   M                       M
FG                  or/of      FG                          gG            or/of         gG 2
            d   2
                                               r   2
                                                                     d2                      r

WORK, ENERGY AND POWER/ARBEID, ENERGIE EN DRYWING

 W  Fx cos                                               U  mgh               or/of         EP  mgh
                                                             Wnet  K            or/of         Wnet  E k
   1                                        1
K  mv 2             or/of              Ek  mv 2
   2                                        2                K  K f  K i         or/of       Ek  Ekf  Eki
                                                                 W
 Wnc  K  U or/of W nc  E k  E p                     P
                                                                 t
Pave  Fv ave        /   Pgemid  Fv gemid

WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG

                                                                 1
 vf                                                       T
                                                                 f
        v  vL                      v  vL                                                  c
 fL           fs    /       fL           fb               E  hf        or/of     E h
        v  vs                      v  vb                                                  

E  W o  E k(max)       or/of           E  Wo  K max       where/waar
                                                                 1                                 1
E  hf and/en W0  hf0                   and/en        Ek (max)  mv max
                                                                     2
                                                                             or/of K max               2
                                                                                                     mv max
                                                                 2                                 2

### Page 18

PHYSICAL SCIENCES                                       3
                                                      (PAPER 1)                                   GR12 0625

ELECTROSTATICS/ELEKTROSTATIKA

   kQ 1Q 2                                                  kQ
F                                                     E
      r2                                                    r2
   W                                                        F
V                                                     E
    q                                                       q
   Q                            Q
n        or/of            n
    e                           qe

ELECTRIC CIRCUITS/ELEKTRIESE STROOMBANE

     V                                                 emf ( ε ) = I(R + r)
R
     I                                                 emk ( ε ) = I(R + r)
R s  R1  R 2  ...
  1   1   1                                            q  It
           .. .
 R p R1 R 2

                                                            W
W = Vq                                                 P
                                                            Δt
W = VI  t
                                                       P = VI
W= I2R         t
                                                       P = I2R
           2
       V Δt
W=
        R                                                   V2
                                                       P
                                                            R

ALTERNATING CURRENT/WISSELSTROOM

                                                       Pave  Vrms Irms       /   Pgemid  Vwgk I wgk
           I max                            I
 I rms                /             I wgk  maks
               2                              2
                                                       Pave  I rms
                                                                2
                                                                    R     /       Pgemid  I2wgkR
            Vmax                              Vmaks
 Vrms                 /             Vwgk                   V2
                                                                                              2
                                                                                             Vwgk
                   2                            2      Pave  rms         /       Pgemid 
                                                              R                               R

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