AQA GCSE Physics -Paper 2

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AQA GCSE Physics -Paper 2

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AQA GCSE Physics -Paper 2 Scalaroo-ooCORRECTooANSWERS-quantitiesoowithooonlyoomagnitudeoosuchooasoospeed,oodistance,ootimeooandoomass. Vectoroo-ooCORRECTooANSWERS-eleration,Aoovectorooquantityoocanoobeoorepresentedooasooanooarrow,ootheoosizeoorepresentingootheoomagnitudeooandootheoodirection,ootheoodirection. Non-contactooforceoo-ooCORRECTooANSWERS-netism/gravity/electrostatic. 3oonon-contactooforcesoo-ooCORRECTooANSWERS-magnetismoo gravity electrostatic Contactooforceoo-ooCORRECTooANSWERS-objectsooareoophysicallyootouchingoo. 3oocontactooforcesoo-ooCORRECTooANSWERS-friction resistance tension Gravityoo-ooCORRECTooANSWERS-Weightooisootheooforceooactingooonooanooobjectoodueootooogravity,ooitooactsooonooanooobjectsoo'centreooofoomass'ooandooisoodirectlyooproportionalootooomass WeighooEquationoo-ooCORRECTooANSWERS-Weightoo=ldoostrength Resultantooforcesoo-ooCORRECTooANSWERS-Aoonumberooofooforcesooactingooonooanooobjectoomayoobeooreplacedoobyooaoosingleooforceoothatoohasootheoosameooeffectooasooallootheoooriginalooforcesooactingootogether,oothisoosingleooforceooisootheoocalledootheooresultantooforce. Inooaootugooofoowar,oo1000Nootoootheooleftooandoo800NTheooresultantooforceooisoo200Nootoootheooleft Free-Bodyooforceoodiagramsoo-ooCORRECTooANSWERS-WIEachooforceooisooshownooonootheoodiagramoobyooaoovector,(ootheoonormalooforceooisoothatoocomponentooofootheoocontactooforceoothatooisooperpendicularootoootheoosurfaceoothatooanooobjectoocontacts) Howootoooresolveooforcesoo(forceoodiagramoosteps)oo-ooCORRECTooANSWERS-DecideooonooaooscaleooofooNooperoocm. Drawootheoo2oogivenooforces,oogivingoorespectootoootheiroolengthoo(moreoocmooifoomoreooN)ooandootheooangleoothatooyouooareoogiven Drawooaoolineooconnectingootheooendooofootheoo2oootheroolinesootoooformooaootriangle Measureootheoolengthooofoothisooline,oothenooconvertooitootoooNoobyoousingootheooscale RelationshipoobetweenooJoulesooandooworkoodoneoo-ooCORRECTooANSWERS-Whenooaooforceoocausesooandooobjectootooomove,O1ooJouleoo=oo1oonewton-metre. Equationooforoowordoodoneoo-ooCORRECTooANSWERS-workoodoneoo=ooforceooxoodistance ElasticooDeformationoo-ooCORRECTooANSWERS-Whenooanooelasticooobjectooisoostretched,oobent,ootwistedoooroocompressedooitoowillooreturnootoooitsoooriginalooform InelasticooDeformationoo-ooCORRECTooANSWERS-Polyetheneoobagsoowilloonotooreturnootoootheiroooriginalooshapeooafteroobeingoodeformed,oothisooisooinelastic. Hooke'sooLawoo-ooCORRECTooANSWERS-Theooextensionooofooanooelasticooobjectooisoodirectlyooproportionalootoootheooforceooappliedooasoolongooasootheoolimitooofooproportionalityooisoonotooexceeded: Equationooforooforceoo(Hooke'soolaw)oo-ooCORRECTooANSWERS-forceoo=oospringooconstantooxooextention Extensionooandoocompression'soorelationshipoowithooelasticoopotentialooenergyooexplanationoo-ooCORRECTooANSWERS-Aooforceoothatoostretchesoooroocompressesooaoospringoodoesooworkooandooelasticoopotentialooenergyooisoostoredooinootheoospring,ooprovidedootheoospringooisoonotooelasticallyoodeformed

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AQA GCSE Physics -Paper 2

Scalaroo-ooCORRECTooANSWERS-
quantitiesoowithooonlyoomagnitudeoosuchooasoospeed,oodistance,ootimeooandoomass.

Vectoroo-ooCORRECTooANSWERS-
quantitiesoowithooaoomagnitudeooandoodirectionooe.g.ooacceleration,ooforceoomomentumoo
andooweight.ooAoovectorooquantityoocanoobeoorepresentedooasooanooarrow,ootheoosizeoorep
resentingootheoomagnitudeooandootheoodirection,ootheoodirection.

Non-contactooforceoo-ooCORRECTooANSWERS-
theooobjectsooareoophysicallyooseparateooe.g.oomagnetism/gravity/electrostatic.

3oonon-contactooforcesoo-ooCORRECTooANSWERS-magnetismoo

gravity

electrostatic

Contactooforceoo-ooCORRECTooANSWERS-objectsooareoophysicallyootouchingoo.

3oocontactooforcesoo-ooCORRECTooANSWERS-friction

resistance

tension

Gravityoo-ooCORRECTooANSWERS-
Weightooisootheooforceooactingooonooanooobjectoodueootooogravity,ooitooactsooonooanooobjec
tsoo'centreooofoomass'ooandooisoodirectlyooproportionalootooomass

WeighooEquationoo-ooCORRECTooANSWERS-
Weightoo=oomassooxoograv.oofieldoostrength

Resultantooforcesoo-ooCORRECTooANSWERS-
Aoonumberooofooforcesooactingooonooanooobjectoomayoobeooreplacedoobyooaoosingleooforce
oothatoohasootheoosameooeffectooasooallootheoooriginalooforcesooactingootogether,oothisoosin
gleooforceooisootheoocalledootheooresultantooforce.

Inooaootugooofoowar,oo1000Nootoootheooleftooandoo800Nootoootheooright.ooTheooresultantoofo
rceooisoo200Nootoootheooleft

,Free-Bodyooforceoodiagramsoo-ooCORRECTooANSWERS-
Whenooanooobjectooisooactedooonoobyoomoreoothanoooneooforceooyouoocanoodrawooaoofree-
bodyooforceoodiagramootoooworkoooutootheooresultantooforceooonootheooobject.ooItooshowso
otheooforcesooactingooonooanooobjectoowithoutooanyoootherooobjectsoooroootherooforcesoosh
own.ooEachooforceooisooshownooonootheoodiagramoobyooaoovector,oowhichooisooanooarrowoo
pointingooinootheoodirectionooofootheooforce.oo(ootheoonormalooforceooisoothatoocomponentoo
ofootheoocontactooforceoothatooisooperpendicularootoootheoosurfaceoothatooanooobjectoocont
acts)

Howootoooresolveooforcesoo(forceoodiagramoosteps)oo-ooCORRECTooANSWERS-
1.ooDecideooonooaooscaleooofooNooperoocm.

2.ooDrawootheoo2oogivenooforces,oogivingoorespectootoootheiroolengthoo(moreoocmooifoomor
eooN)ooandootheooangleoothatooyouooareoogiven

3.ooDrawooaoolineooconnectingootheooendooofootheoo2oootheroolinesootoooformooaootriangle

4.ooMeasureootheoolengthooofoothisooline,oothenooconvertooitootoooNoobyoousingootheooscale

RelationshipoobetweenooJoulesooandooworkoodoneoo-ooCORRECTooANSWERS-
Whenooaooforceoocausesooandooobjectootooomove,ooworkooisoodoneooonootheooobjectoosooo
whenootheooforceoocausesoodisplacement.ooOneoojouleooofooworkooisoodoneoowhenooaoofor
ceooofoo1oonewtonoodisplacesooanooobjectoo1oometre.oo1ooJouleoo=oo1oonewton-metre.

Equationooforoowordoodoneoo-ooCORRECTooANSWERS-
workoodoneoo=ooforceooxoodistance

ElasticooDeformationoo-ooCORRECTooANSWERS-
Whenooanooelasticooobjectooisoostretched,oobent,ootwistedoooroocompressedooitoowillooretur
nootoooitsoooriginalooform

InelasticooDeformationoo-ooCORRECTooANSWERS-
Polyetheneoobagsoowilloonotooreturnootoootheiroooriginalooshapeooafteroobeingoodeformed,o
othisooisooinelastic.

Hooke'sooLawoo-ooCORRECTooANSWERS-
Theooextensionooofooanooelasticooobjectooisoodirectlyooproportionalootoootheooforceooapplie
dooasoolongooasootheoolimitooofooproportionalityooisoonotooexceeded:

Equationooforooforceoo(Hooke'soolaw)oo-ooCORRECTooANSWERS-
forceoo=oospringooconstantooxooextention

Extensionooandoocompression'soorelationshipoowithooelasticoopotentialooenergyooexplanati
onoo-ooCORRECTooANSWERS-
Aooforceoothatoostretchesoooroocompressesooaoospringoodoesooworkooandooelasticoopotenti
alooenergyooisoostoredooinootheoospring,ooprovidedootheoospringooisoonotooelasticallyoodefor

, med,ootheooworkoodoneooandooelasticoopotentialooenergyooareooequal.ooBeforeootheoolimito
oofooproportionalityooisoobreechedootheoorelationshipooisoolinearoo(directlyooproportional)oo
afterwardsooitooisoonon-linear

Elasticoopotentialooenergyooequationoo(given)oo-ooCORRECTooANSWERS-
Elasticoopotentialooenergyoo=oo1/2ooxoospringooconstantooxooextension^2

Momentoomeaningoo-ooCORRECTooANSWERS-
Theooturningooeffectooofooaooforceooisoocalledooitsoo'moment'

Momentooequationoo-ooCORRECTooANSWERS-momentoo=ooforceooxoodistance

Balancingoo-ooCORRECTooANSWERS-
Ifooanooobjectooisoobalancedootheooclockwiseoomomentooisooequalootoootheooanticlockwiseo
omoment.

Leversoo-ooCORRECTooANSWERS-
Aooleverooconsistsooofooaooload,ooeffortooandoopivot,ooleversoouseoomomentsootooomultiplyo
oaooforce,ootheyooallowooaoolargerooforceootoooactooonootheooloadoothatooisoosuppliedoobyoot
heooeffort.

EngineooGearsoo-ooCORRECTooANSWERS-
Engineoogearsoohaveootwooomainoojobs,ooproducingootorqueooandoospeed,oohoweveroothe
yooareooinverselyooproportionaloosooogearsooareoomadeootooomakeooaoocompromiseoobetw
eenootheootwoooinooanyoogivenoosituation.

Whenoostartingooaoocarooweoowantoohighootorque,oowhichoomeansoobeingooableootooocarry
ooaoogreaterooloadoo,ooandooconsequentiallyoolessoospeed.ooInoolowoogearsoothisooisooachi
evedooas...oo-ooCORRECTooANSWERS-
1.ooTheooengineoocausesooaoosmalloocogooonootheooengineooaxleootooorotate.

2.ooTheoosmalloocogooonootheooengineooaxleooisooconnectedootoooaoolargeroocogooonootheo
owheelooaxle,oowhichooincreasesootheootorqueoo(moment)ooexerted.

3.Aoohighooturningooforceoobutoolowoospeedooisooexertedooonootheoowheeloo(lowoogear)

Whenooaoocarooisooalreadyoomoving,ooweoowantooaoohighoospeedoowhichooisooachievedooa
s...oo-ooCORRECTooANSWERS-
1.Theooengineoocausesooaoolargeroocogooonootheooengineooaxleootoooturn.

2.Theoolargeroocogooonootheooengineooaxleooisooconnectedootoooaoosmalleroocogooonootheo
owheelooaxle,oocausingooaoohighoorateooofoorotation,oobutooaoolowooturningooforce.

3.ooTheoowheeloorotatesooquickly,oocausingooaoohighoospeed

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Study: AQA GCSE Physics
Uploaded on: October 10, 2024
Number of pages: 28
Written in: 2024/2025
Type: Exam (elaborations)
Contains: Questions & answers

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