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NATIONAL
SENIOR CERTIFICATE /
NASIONALE
SENIOR SERTIFIKAAT
GRADE / GRAAD 12
JUNE / JUNIE 2022
PHYSICAL SCIENCES P1
MARKING GUIDELINE
FISIESE WETENSKAPPE V1
NASIENRIGLYN
MARKS/ PUNTE: 150
This marking guideline consists of 14 pages./
Hierdie nasienriglyn bestaan uit 14 bladsye.
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Physical Sciences Grade 12 P1 Eastern Cape June 2022 Memo
Grade 12 Physical Sciences Paper 1 memorandum from the Eastern Cape June 2022 (Afrikaans), 14 pages. Read online or download the free PDF.
Physical Sciences · Grade 12 · Eastern Cape June · 2022 · Afrikaans. Memorandum, 14 pages. Read online or download the PDF.
- Subject
- Physical Sciences
- Grade
- Grade 12
- Language
- Afrikaans
- Document type
- Memorandum
- Year
- 2022
- Exam period
- Eastern Cape June
- Paper
- 1
- Curriculum
- CAPS
- Pages
- 14
- File size
- 333.1 KB
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This exam
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2 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
GENERAL GUIDELINES/ALGEMENE RIGLYNE
1. CALCULATIONS/BEREKENINGE
1.1 Marks will be awarded for: correct formula, correct substitution, correct
answer with unit.
Punte sal toegeken word vir: korrekte formule, korrekte substitusie, korrekte
antwoord met eenheid.
1.2 No marks will be awarded if an incorrect or inappropriate formula is used,
even though there are many relevant symbols and applicable substitutions.
Geen punte sal toegeken word waar ʼn verkeerde of ontoepaslike formule
gebruik word nie, selfs al is daar relevante simbole en relevante substitusies.
1.3 When an error is made during substitution into a correct formula, a mark
will be awarded for the correct formula and for the correct substitutions, but no
further marks will be given.
Wanneer ʼn fout gedurende substitusie in ʼn korrekte formule begaan word,
sal ʼn punt vir die korrekte formule en vir korrekte substitusies toegeken word,
maar geen verdere punte sal toegeken word nie.
1.4 If no formula is given, but all substitutions are correct, a candidate will forfeit
one mark.
Indien geen formule gegee is nie, maar al die substitusies is korrek, verloor
die kandidaat een punt.
1.5 No penalisation if zero substitutions are omitted in calculations where
correct formula/principle is correctly given.
Geen penalisering indien nulwaardes nie getoon word nie in berekeninge
waar die formule/beginsel korrek gegee is nie.
1.6 Mathematical manipulations and change of subject of appropriate formulae
carry no marks, but if a candidate starts off with the correct formula and then
changes the subject of the formula incorrectly, marks will be awarded for the
formula and correct substitutions. The mark for the incorrect numerical answer
is forfeited.
Wiskundige manipulasies en verandering van die onderwerp van toepaslike
formules tel geen punte nie, maar indien ʼn kandidaat met die korrekte formule
begin en dan die onderwerp van die formule verkeerde verander, sal die punte
vir die formule en korrekte substitusies toegeken word. Die punt vir die
verkeerde numeriese antwoord word verbeur.
1.7 Marks are only awarded for a formula if a calculation has been attempted,
i.e. substitutions have been made or a numerical answer given.
Punte word slegs vir ʼn formule toegeken indien ʼn poging tot ʼn berekening
aangewend is, d.w.s. substitusies is gedoen of ʼn numeriese antwoord is gegee.
1.8 Marks can only be allocated for substitutions when values are substituted into
formulae and not when listed before a calculation starts.
Punte kan slegs toegeken word vir substitusies wanneer waardes in formule
ingestel word en nie vir waardes wat voor ʼn berekening gelys is nie.
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(EC/JUNE/JUNIE 2022) PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 3
1.9 All calculations, when not specified in the question, must be done to a minimum
of two decimal places.
Alle berekenings, wanneer nie in die vraag gespesifiseer word nie, moet tot ʼn
minimum van twee desimale plekke gedoen word.
1.10 If a final answer to a calculation is correct, full marks will not automatically be
awarded. Markers will always ensure that the correct/appropriate formula is
used and that workings, including substitutions, are correct.
Indien ʼn finale antwoord van ʼn berekening korrek is, sal volpunte nie outomaties
toegeken word nie. Nasieners sal altyd verseker dat die korrekte/toepaslike
formule gebruik word en dat bewerkings, insluitende substitusies korrek is.
1.11 Questions where a series of calculations have to be made (e.g. a circuit
diagram question) do not necessarily always have to follow the same order.
FULL MARKS will be awarded provided it is a valid solution to the problem.
However, any calculation that will not bring the candidate closer to the answer
than the original data, will not count any marks.
Vrae waar ʼn reeks berekeninge gedoen moet word (bv. ʼn stroombaan-
diagramvraag) hoef nie noodwendig dieselfde volgorde te hê nie. VOLPUNTE
sal toegeken word op voorwaarde dat dit ʼn geldige oplossing vir die probleem
is. Enige berekening wat egter nie die kandidaat nader aan die antwoord as
die oorspronklike data bring nie, sal geen punte tel nie.
2. UNITS/EENHEDE
2.1 Candidates will only be penalised once for the repeated use of an incorrect
unit within a question.
Kandidate sal slegs een keer gepenaliseer word vir die herhaaldelike gebruik
van ʼn verkeerde eenheid in ʼn vraag.
2.2 Units are only required in the final answer to a calculation.
Eenhede word slegs in die finale antwoord op ʼn vraag verlang.
2.3 Marks are only awarded for an answer, and not for a unit per se. Candidates
will therefore forfeit the mark allocated for the answer in each of the following
situations:
• Correct answer + wrong unit
• Wrong answer + correct unit
• Correct answer + no unit
Punte sal slegs vir ʼn antwoord en nie vir ʼn eenheid per se toegeken word nie.
Kandidate sal die punt vir die antwoord in die volgende gevalle verbeur:
• Korrekte antwoord + verkeerde eenheid
• Verkeerde antwoord + korrekte eenheid
• Korrekte antwoord + geen eenheid
2.4 SI units must be used except in certain cases, e.g., V.m-1 instead of N.C-1, and
cm.s-1 or km.h-1 instead of m.s-1 where the question warrants this.
SI-eenhede moet gebruik word, behalwe in sekere gevalle, bv. V.m-1 in plaas
van N.C-1, en cm.s-1 of km.h-1 in plaas van m.s-1 waar die vraag dit regverdig.
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4 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
3. GENERAL/ALGEMEEN
3.1 If one answer or calculation is required, but two are given by the candidate, only
the first one will be marked, irrespective of which one is correct. If two answers
are required, only the first two will be marked, etc.
Indien een antwoord of berekening verlang word, maar twee word deur die
kandidaat gegee, sal slegs die eerste een nagesien word, ongeag watter een
korrek is. Indien twee antwoorde verlang word, sal slegs die eerste twee nagesien
word, ens.
3.2 For marking purposes, alternative symbols (s, u, t etc) will also be accepted.
Vir nasiendoeleindes sal alternatiewe simbole (s, u, t ens.) ook aanvaar word.
3.3 Separate compound units with a multiplication dot, no a full stop, for example,
m.s-1.
For marking purposes, m.s-1 and m/s will also be accepted.
Skei saamgestelde eenhede met ʼn vermenigvuldigingspunt en nie met ʼn punt
nie, byvoorbeeld m.s-1. Vir nasiendoeleindes sal m.s-1 en m/s ook aanvaar word.
4. POSITIVE MARKING/POSITIEWE NASIEN
Positive marking regarding calculations will be followed in the following cases:
Positiewe nasien met betrekking tot berekeninge sal in die volgende gevalle geld:
4.1 Sub-question to sub-question: When a certain variable is calculated in one
sub-question (e.g. 3.1) and needs to be substituted in another (3.2 of 3.3), e.g., if
the answer for 3.1 is incorrect and is substituted correctly in 3.2 or 3.3, full marks
are to be awarded for the subsequent sub-questions.
Subvraag na subvraag: Wanneer ʼn sekere veranderlike in een subvraag (bv.
3.1) bereken word en dan in ʼn ander vervang moet word (3.2 of 3.3), bv. indien
die antwoord vir 3.1 verkeerd is en word korrek in 3.2 of 3.3 vervang, word
volpunte vir die daaropvolgende subvraag toegeken.
4.2 A multistep question in a sub-question: If the candidate has to calculate, for
example, current in die first step and gets it wrong due to a substitution error, the
mark for the substitution and the final answer will be forfeited.
ʼn Vraag met veelvuldige stappe in ʼn subvraag: Indien ʼn kandidaat bv. die
stroom verkeerd bereken in ʼn eerste stap as gevolg van ʼn substitusiefout,
verloor die kandidaat die punt vir die substitusie sowel as die finale antwoord.
5. NEGATIVE MARKING/NEGATIEWE NASIEN
Normally an incorrect answer cannot be correctly motivated if based on a conceptual
mistake. If the candidate is therefore required to motivate in QUESTION 3.2 the
answer given in QUESTION 3.1, and 3.1 is incorrect, no marks can be awarded for
QUESTION 3.2. However, if the answer for e.g., 3.1 is based on a calculation, the
motivation for the incorrect answer could be considered.
ʼn Verkeerde antwoord, indien dit op ʼn konsepsuele fout gebaseer is, kan normaalweg
nie korrek gemotiveer word nie. Indien ʼn kandidaat gevra word om in VRAAG 3.2 die
antwoord op VRAAG 3.1 te motiveer en 3.1 is verkeerd, kan geen punte vir VRAAG
3.2 toegeken word nie. Indien die antwoord op bv. 3.1 egter op ʼn berekening
gebaseer is, kan die motivering vir die verkeerde antwoord in 3.2 oorweeg word.
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(EC/JUNE/JUNIE 2022) PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 5
QUESTION/VRAAG 1
1.1 C (2)
1.2 C (2)
1.3 B (2)
1.4 D (2)
1.5 A (2)
1.6 C (2)
1.7 B (2)
1.8 A (2)
1.9 C (2)
1.10 A (2)
[20]
QUESTION/VRAAG 2
2.1 When a resultant/net force acts on an object, it accelerates in the direction of
the force. The acceleration is directly proportional to the force and inversely
proportional to the mass of the object.
Wanneer ʼn resulterende/netto krag op ʼn voorwerp inwerk, versnel dit in die
rigting van die krag. Die versnelling is direk eweredig aan die krag en
omgekeerd eweredig aan die massa van die voorwerp. (2)
2.2 OPTION 1 / OPSIE 1 OPTION 2 / OPSIE 2
fk N fk N
F
F// F
F⊥
W
F⊥ and / en F//
Mark awarded for arrow and label / Punt vir beide pyl en byskrif toegeken.
Do not penalise for length of arrows since drawing is not drawn to scale
Moenie vir die lengte van die pyltjie penaliseer nie aangesien skets nie na
skaal geteken is nie
Any other additional force(s) / Enige ander addisionele kragte 3⁄4
If force(s) do not make contact with body. Max. 3⁄4
Indien krag(te) nie met die voorwerp kontak maak nie. Maks. 3⁄4 (4)
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6 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
2.3 The force that opposes the motion of an object and acts parallel to the
surface.
Die krag wat die beweging van ʼn voorwerp teenstaan en parallel met die
oppervlak inwerk. (2)
2.4.1 OPTION 1 (Upwards on the plane is positive) / OPSIE 1 (Teen die
skuinsvlak op as positief)
Fnet = ma
Fnet = 0 N Any one/ Enige een
fk – FR – F// = 0
fk – FR – mg sinθ = 0
[fk – 240 – (50)(9,8)sin 12˚] = 0
fk = 341,88 N (4)
2.4.2 Positive marking from QUESTION 2.3 / Positiewe nasien vanaf
VRAAG 2.3
Marking criteria / Nasienkriteria
μk = fk
N Any one/ Enige een
fk
μk = 𝑚𝑔 𝑐𝑜𝑠 𝜃
341,88
μk = [ (50 𝑥 9,8) 𝑐𝑜𝑠 12˚ ]
μk = 341,88
479,29
μk = 0,71 (4)
[16]
QUESTION/VRAAG 3
3.1 Maximum static force of friction.
Maksimum statiese wrywingskrag. (1)
3.2
Fapp FN
Fstring/ tou
fs(max/ maks)
Fg
Mark awarded for arrow and label / Punt vir beide pyl en byskrif.
Do not penalise for length of arrows since drawing is not drawn to scale.
Moenie vir die lengte van die pyltjie penaliseer nie aangesien nie na skaal
geteken nie
Any other additional force(s) / Enige ander addisionele krag(te) 4⁄5
If force(s) do not make contact with body. Max. 4⁄5
Indien krag(te) nie met die voorwerp kontak maak nie. Maks. 4⁄5 (5)
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3.3.1 OPTION 1 / OPSIE 1
Fnet = ma
FT – mg = ma
Fx – FT – fs(max) = ma Any one / Enige een
FT – (5)(9,8) = 0
= 49 N
Fx = Fapp cos 30˚
= 65 cos 30˚
= 56,29 N
56,29 – 49 – fs(max) = 0
fs(max) = 7,29 N
OPTION 2/OPSIE 2
Fnet = ma
FT - mg = ma Any one/ Enige een
Fx – FT – fs (max) = ma
[65 cos 30˚ – (5)(9,8) – fs(max) = 0]
56,29 – 49 – fs(max) = 0
fs(max) = 7,29 N (5)
3.3.2 Vertical forces on metal box are in equilibrium / Vertikale kragte op
metaalhouer is in ewewig:
Fg – Fv – FN = 0 Any one / Enige een
mg = Fapp sin 30˚ – FN
mg = [65 sin 30˚ – 36,1]
m x 9,8 = 68,6
m = 7 kg (4)
[15]
QUESTION 4 / VRAAG 4
4.1 There exists a force of attraction between any two masses in the universe.
This force is directly proportional to the product of the masses and
inversely proportional to the square of the distance between their centres.
Daar bestaan ʼn aantrekkingskrag tussen enige twee massas in die heelal.
Die krag is direk eweredig aan die produk van die massas en omgekeerd
eweredig aan die kwadraat van die afstand tussen hul middelpunte. (2)
4.2 F = Gm1m2
d2
= (6,67 x 10-11)(1,2 x 1018)(3 x 1018)
(2 x 1010)2
= 6,0 x 106 N (5)
4.3 LESS THAN
Mass of planet P < Mass of planet Q
g ∝ Mass
KLEINER AS
Massa van planeet P < Massa van planeet Q
g ∝ Massa (2)
[9]
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8 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
QUESTION/VRAAG 5
5.1 Motion of an object upon which the only force acting on it is gravitational
force.
Die beweging waartydens die enigste krag wat op ʼn voorwerp inwerk, die
gravitasiekrag is. (2)
5.2.1 UPWARDS IS POSITIVE / DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
vf = vi + gΔt vf = vi + gΔt
0 = 20 + (-9,8)Δt 0 = -20 + 9,8Δt
Δt = 2,04 s Δt = 2,04 s (4)
5.2.2 OPTION 1 / OPSIE 1
Positive marking from QUESTION 5.2.1 / Positiewe nasien vanaf
VRAAG 5.2.1
UPWARDS IS POSITIVE/ DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
Total time / Total time/
Totale tyd = 2,04 + 1,66 = 3,7 s Totale tyd = 2,04 + 1,66 = 3,7 s
Δy = viΔt + ½gΔt2
Δy = (20)(3,7) + ½(-9,8)(3,72) Δy = viΔt + ½gΔt2
Δy = 6,92 m Δy = (-20)(3,7) + ½(9,8)(3,72)
Δy = -6,919 m
Δy = 6,92 m
(If answer left as negative, then loses
last mark)
(As antwoord as negatief gelaat word,
verloor dan laaste punt)
OPTION 2 / OPSIE 2
Positive marking from QUESTION 5.2.1 / Positiewe nasien vanaf
VRAAG 5.2.1
UPWARDS IS POSITIVE/ DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
Time taken from B to ground Time taken from B to the ground
Tyd geneem van B na grond Tyd geneem van B na grond
Δt= 2,04 - 1,66 = 0,38 s Δt= 2,04 - 1,66 = 0,38 s
Δy = viΔt + ½gΔt2 Δy = viΔt + ½gΔt2
Δy = (20)(0,38) + ½(-9,8)(0,382) Δy = (-20)(0,38) + ½(9,8)(0,382)
Δy = 6,89 m = -6,89 m
Height / Hoogte = 6,89 m above the
ground / bo die grond
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(EC/JUNE/JUNIE 2022) PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 9
OPTION 3 / OPSIE 3 OPTION 3 / OPSIE 3
Positive marking from QUESTION 5.2.1 / Positiewe nasien vanaf
VRAAG 5.2.1
UPWARDS IS POSITIVE/ DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
Calculate the maximum height: Calculate the maximum height:
Bereken die maksimum hoogte: Bereken die maksimum hoogte:
Any one Any one
vf 2= vi2 + 2gΔx formula vf 2= vi2 + 2gΔx
formula
02 = 202 + 2(-9,8).Δx Enige een 0 = (-20) + 2(9,8).Δx
2 2
Enige een
Δx = 20,41 m formule Δx = 20,41 m formule
Ball falls for 1,66 m / Bal val vir Ball falls for 1,66 m Bal val vir 1,66 m
1,66 m Δy = viΔt + ½gΔt2
Δy = viΔt + ½gΔt2 Δy = (0)(1,66) + ½(9,8)(1,662)
Δy = (0)(1,66) + ½(-9,8)(1,662) Δy = 13,05 m
Δy = -13,05 m
Height of the balcony/
Height of the balcony / Hoogte van die balkon = 20,41 –
Hoogte van die balkon = 20,41 – 13,51
13,51
Height of the balcony/
Height of the balcony / Hoogte van die balkon = 6,91 m
Hoogte van die balkon = 6,91 m (5)
5.2.3 OPTION 1 / OPSIE 1
Positive marking from QUESTION 5.2.1 / Positiewe nasien vanaf
VRAAG 5.2.1
UPWARDS IS POSITIVE/ DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
vf = vi + gΔt vf = vi + gΔt
vf = 0 + (-9,8)(1,66) vf = 0 + 9,8(1,66)
vf = 16,27 m.s -1 vf = 16,27 m.s-1
OPTION 2 / OPSIE 2
Positive marking from QUESTION 5.2.1/ Positiewe nasien vanaf
VRAAG 5.2.1
UPWARDS IS POSITIVE/ DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
vf = vi + gΔt vf = vi + gΔt
vf = 20 + (-9,8)(3,7) vf = -20 + 9,8(3,7)
vf = -16,26 vf = 16,26 m.s-1
vf = 16,26 m.s -1 (3)
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10 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
5.3 Positive marking from QUESTION 5.2.3 / Positief nasien vanaf
VRAAG 5.2.3
UPWARDS IS POSITIVE / OPWAARTS AS POSITIEF
V (m.s-1)
20
0
2,04 3,7 Δt (s)
-16,27
DOWNWARDS IS POSITIVE / AFWAARTS AS POSITIEF
V (m.s-1)
16,27
0
2,04 3,7 Δt (s)
-20
Marking criteria / Nasienkriteria
Shape / Vorm
Initial velocity / Begin snelheid
Time at maximum height / Tyd by maksimum hoogte
Velocity when man catches the ball / Snelheid wanneer man bal vang
Time when man catches the ball / Tyd wanneer man bal vang
(5)
[19]
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(EC/JUNE/JUNIE 2022) PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 11
QUESTION/VRAAG 6
6.1 The momentum of an object is the product of its mass and velocity.
(2 or 0)
Die momentum van ʼn voorwerp is die produk van sy massa en snelheid.
(2 of 0) (2)
6.2.1 p = mv
p = 3200 x 18
p = 56 700 kg.m.s-1 (3)
6.2.2 Σpi = Σpf Any one/Enige een
pTi + pCi = pTf + pCf
57600 + (12 x 1800) = (10 x 3200) + 1800 vCf
vCf = 26,22 m.s-1 to the right / regs (or any indication of direction / of enige
aanduiding van rigting) (5)
6.3 Inelastic. (Only momentum is conserved) Kinetic energy is not conserved.
Onelasties (Slegs momentum word behoue) Kinetiese energie is nie behoue
nie. (3)
6.4 Airbags/seatbelts/Crumble zones (Any two )
Accept headrests
Lugsakke/veiligheidsgordel/frommelsone (Enige twee)
Aanvaar hoofstutte (2)
[15]
QUESTION/VRAAG 7
7.1 UPWARDS IS POSITIVE/ DOWNWARDS IS POSITIVE /
OPWAARTS AS POSITIEF AFWAARTS AS POSITIEF
vf = vi + gΔt vf = vi + gΔt
vf = 0 + -9,8(0,35) vf = 0 + -9,8(0,35)
vf = -3,43 m.s -1 vf = 3,43 m.s-1 downwards/afwaarts
vf = 3,43 m.s downwards/afwaarts
-1 (4)
7.2 Impulse is the product of the net force acting on an object and the time for which
the net force acts on the object.
Impuls is die produk van die netto krag wat op ʼn voorwerp inwerk en die tyd wat
die netto krag op die voorwerp inwerk. (2)
Positive marking from QUESTION 7.1 / Positiewe nasien vanaf VRAAG 7.1
7.3 Fnet.∆t = ∆p Any one / Enige een
Fnet.∆t = mvf – mvi
Fnet x 0,69 = 45 x 0 – 45 x 3,43
Fnet = 223,7 N Upwards / Opwaarts (5)
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12 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
7.4 Fnet = mΔv
Δt
Δv remains the same.
If the knees are not bent, the time to come to rest is very small (Δt decreases)
Fnet increases and can cause injury.
Fnet = mΔv
Δt
Δv bly dieselfde
As die knieë nie gebuig is nie, is die tyd om tot rus te kom baie klein
(Δt verminder)
Fnetto verhoog en kan beserings veroorsaak. (3)
[14]
QUESTION/VRAAG 8
8.1 In an isolated system, the total mechanical energy remains constant.
In ʼn geïsoleerde sisteem bly die totale meganiese energie konstant. (2)
8.2 Emec(B) = Emec(C)
(Ep + Ek)B = (Ep + Ek)C Any one / Enige een
(mgh + ½mv2)B = (mgh + ½mv2)C
(540)(9,8)(0) + ½(540)vB2 = (540)(9,8) (4,5 sin 7,5˚) + ½(540)(02)
vB = 3,39 m.s-1 (4)
8.3 fk = μkN
fk = (0,8) x (540)(9,8)
fk = 4233,6 N (3)
8.4 The net work done on an object is equal to the change in kinetic energy of the
object.
Die netto werk verrig op ʼn voorwerp is gelyk aan die verandering in kinetiese
energie van die voorwerp. (2)
8.5.1 Positive marking from QUESTION 8.2 / Positiewe nasien van VRAAG 8.2.
OPTION 1 / OPSIE 1
Wnet = ΔEk Any one / Enige een
Wf = ½m(vf2 – vi2)
Wf = ½ x 540)(3,39)2 – ½ x 540(122)
Wf = -35 777,13 J
OPTION 2 / OPSIE 2
Wnc = ΔEk + ΔEp Any one / Enige een
Wf = ½m(vf2 – vi2) +0
Wf = ½ x 540 x 3,392 – ½ x 540 x 122
Wf = -35 777,13 J (4)
8.5.2 Positive marking from QUESTION 8.3 and 8.5.1
Positiewe nasien vanaf VRAAG 8.3 en 8.5.1
Wf = Ff.Δx.cosθ
-35777,13 = (4233,6).Δx.cos 180˚
Δx = 8,45 m (4)
[19]
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(EC/JUNE/JUNIE 2022) PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 13
QUESTION/VRAAG 9
9.1 The change in frequency or pitch detected by a listener because the listener
and the sound source have different velocity relative to the medium of sound
propagation.
Die verandering in frekwensie of toonhoogte van die klank waargeneem deur ʼn
luisteraar, omdat die klankbron en die luisteraar verskillende snelhede relatief
tot die medium waarin die klank voortgeplant word, het. (2)
9.2 fL = v ± vL . fS
v ± vS
875 = (340 + 0) . 680
(340 – vs)
vs = 75,77 m.s-1
vs = 75,77 x 3,6
vs = 272,77 km.h-1 (6)
9.3 Decreases
As it moves away, wavelength increases but velocity remains constant.
Frequency decreases.
Afneem
Soos dit wegbeweeg, verleng die golflengte maar die snelheid bly konstant.
Frekwensie neem af. (3)
9.4 Measuring foetal heartbeat
Monitoring and measuring of blood flow
Meet fetus se hartklop
Monitering en meting van bloedvloei. (2)
[13]
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14 PHYSICAL SCIENCES P1/FISIESE WETENSKAPPE V1 (EC/JUNE/JUNIE 2022)
QUESTION/VRAAG 10
10.1
Marking criteria / Nasienkriteria
Direction / Rigting
Shape / Vorm
Lines all touching charges and not
crossing / Lyne raak aan ladings en
kruis nie
(3)
10.2 F = kQ1Q2
r2
F = (9 x 109)(4 x 10-6)(4 x 10-6)
(0,75)2
F = 0,256 N right / regs (4)
10.2 Qe = nqe
4 x 10-6 = n x (1,6 x 10-19)
n = 2,5 x 1013 protons / protone (3)
[10]
TOTAL/ TOTAAL: 150
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