Chapter 2 P2 Section a Intensive

8/8/2019 Chapter 2 P2 Section a Intensive

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FIZIKMOZAC 2010

FORCES AND MOTION

2.1LINEAR MOTION

Question 1: Melaka Mid 08Ali walks to the north for a dis300 m. He then turns west an

for another distance of 400 mPak Kassims stall.Diagram 1 shows the path tak

Diagram 1

(a) Distance is a Tick ( ) the correct ansbox below

Scalar quantit

Vector quuantit

(b) On Diagram 1, mark an arrshow the displacement m

(c) What is the total distanceby Ali?

.............................................

(d) Ali then walks home for adistance of 500 m. What isdisplacement made by Ali.

.............................................

x

tance ofwalks

o reachn by Ali.

er in the

y

ow tode by Ali[1 mark]

ravelled

...............[1 mark]

otherthe total

.................[1 mark]

Question 2: MRSM 07Diagram 2.1 shows anup where a ticker timerthe type of motion for a

down a friction-compenThe frequency of the tiHz.

Diagram

(a) State the type of cthe ticker timer.

(b) Diagram 2.2 showtape obtained fromthe trolley.

Diagram

(i) What is the tibetween twodots?

(ii) State the typetrolley

(iii) Calculate thetrolley.

xperimental set-is used to studytrolley moving

sated runway.ker timer is 50

.1

rrent used by

[1 mark]

a strip of tickerthe motion of

2.2

e intervalonsecutive

[1 mark]of motion of the

[ 1 mark]

elocity of the


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[2 marks]

Question 3

Diagram 3 shows a strip of ticwhich is produced by an movithrough a ticker-timer of frequHz.

Diagram 3

(a) State the type of currenthe ticker-timer.

(b) Draw a tape chart for thof the object.

(c) Describe the state of msituation (b).

(d) Calculate the average vfor:

(i) the first 10 ticks

(ii) the last 10 ticks

er tapeng objectency 50

t used by

e motion

otion in

elocity

(e) Calculate the acmotion of the bu

(f) Calculate the tot

by the situation.2.2MOTION GRAPH

Question 4(a) Figure 4.1 shows atime graph of an objec

Figure 4

(i) State the physwhich represeof the graph.

(ii) Calculate thegraph, m.

(b) Figure 4.2 shows av against time t.

eleration of thes .

l displacement

isplacement-t.

.1

ical quantitynts the gradient

radient of the

raph of velocity


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Diagram 4.2

(i) State the physical qwhich represents thof the graph.

(ii) Calculate the gradiegraph.

(iii) Calculate the total ditraveled by the obje

Question 5: Trial Melaka 08Diagram 5.1 shows a velocity-graph for a toy car.

Diagram 5.1

(a) What is meant by veloci

antitygradient

t of the

stancet.

ime

ty?

.

(b) On Diagram 3.1region with zero

.

(c) Based from DiagCalculate(i) The acceleration

(ii) Displacement matoy car in 20 sec

Question 6Diagram 6 shows the digraph for the motion ofrunning along a straigh

Diagra

(a) Based on Diagram 6distance travelled b10 s?

....................................

(b) What physical quantthe gradient of the g6?

[1 mark ]

ark with R acceleration.

[1 mark ]

am 3.1 ,of the car.

[ 2 marks ]

de by thends

[2 marks ]

stance-timea runner who ist line.

6

, what is thethe runner after

............................[1 mark ]

ity is given byraph in Diagram


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...............................................(c) Describe the motion of the

(i) from A to B

..............................................

(ii)from B to C

..........................................

Question 7Diagram 7 shows the graph ofagainst time for the motion of

Diagram 7

(a) State the physical quantitrepresented by

(i) the gradient of the grap

.........................................[

(ii) the area under the grap

.................[1 mark ]

runner,

................

[1 mark ]

.................[1 mark ]

velocitya car.

.

..............1 mark]

.

.............................

(b) Complete the tabl

Section of thegraph

T

OA

AB

Question 8: SBP 07Diagram 8.1 shows akidnapper has overtoo

2.00 p.m. The police cthe kidnappers car.Diagram 8.2 shows atime graph for both car

(a) Based on graph instate the motion of(i) kidnappers car

[1 mark ]

...........................[1 mark]

below.

ype of motion ofthe car

[2 marks]

car driven by aa police car at

ar then followedvelocity against.

Diagram 8.2,the

[ 1 mark ]


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(ii) police car

.....

(b) (i) What is the net forcethe police car after 2.01 p

....................................................(ii) Give a reason for you

in 3(b)(i).

....................................................

(c) Sketch a displacement aggraph of the police car.

2.3 INERTIA2.4MOMENTUM

Question 9Diagram 9.1 shows a trolley Pwith a constant velocity, u, cola stationary trolley Q of massAfter collision, the two trolley

together and move with a finalv. the motion of the two trollerecorded by a ticker tape attathe trolley P and passing throticker tape timer having a freq50 Hz.

......[ 1 mark ]acting on

.m?

............[ 1 mark ]r answer

............[ 1 mark ]

ainst time

movinglide with2 kg.

stuck

velocity,s ished togh a

uency of

Diagram

Diagram 9.2 shows theticker tape produced bbefore and after the col

Diagram

(a) Name the type of colin this situation.

(b) What is the velocitybefore collision?

(c) What is the total mocollision?

(d) What is the final velcombined trolleys P

(e) Determine the mass

Question 10: Melaka F4Diagram 10 shows a ca1200 kg fires a cannonkg. The speed of the cleaves the cannon is 60

.1

dots on thethe two trolleys

lision.

.2

lision involved

of trolley P

entum before

city of theand Q?

of trolley Q.

08non of mass,M,

all of mass,m, 4annonball as itms -1.


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FIZIKMOZAC 2010

Diagram 10

(a) What is meant by mass?

............................................

(b) Base on Diagram 10(i) What is the relation bet

backward momentum aforward momentum

.........................................

(ii) Write the equation to srelationship in (b)(i) ?

.........................................

(iii) Name the physics prininvolved in the explosio

.........................................(c) Calculate the initial velocit

recoil cannon when the cis fired.

Question11 (SPM 2004)Diagram 11 shows a man stan

stationary boat. He then jumpthe boat onto the jetty. The baway from the jetty as he jum

.................[1 mark]

een thed the

................[1 mark]

ow the

..............[1 mark]

iplen.

..............[1 mark]y of thennonball

[2 marks]

ding on a

s out ofat movess.

Diagram

(a) State the physics priinvolved in the movas the man jumps o

_________________

(b) Explain why the boafrom the jetty when t

_________________

_________________

(c) The mass of the majumps at a velocitymass of the boat isthe velocity of the bjumps.

(d) Name one applicatioprinciple stated in (aexploration of outer

_________________

Question 12: MRSM 08Diagram 12 shows a sowith high momentum.

11

nciple that isment of the boatto the jetty.

_____________ [1 m]

t moves awayhe man jumps.

_____________

____________ [1 m]

is 50 kg and hef 2 ms -1. The0 kg. Calculateat as the man

[2 m]n of the physics) in anspace.

_____________ [1 m]

ftball moving


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Diagram 12

(a) What is meant by mom

.........................................[

(b) Calculate the momentusoftball if the mass of t80 g and its velocity is 1

(c) If the mass of the ball isincreased but its momeremains unchanged, hovelocity change?

.........................................[

(d) Using the concept of foexplain why the playerwear a glove to catch amoving softball.

.........................................[

Question 13: Melaka Mid 08Diagram 13.1 shows a lorry of1200 kg moving at the speedcollides with a car of mass 10which is travelling in the oppodirection at 20 m/s. After thecollision, the two vehicles motogether.

ntum?

............mark]

of thee ball is00 ms -1.

[2 m]

tumdoes its

............mark]

ce,eeds to

fast-

...........mark]

massf 30 m/s00 kgsite

e

Diagram 1

(a) State the type ofinvolved in this a

.............................

(b) Calculate the velvehicles immedi

collision.

(c) The driver of theforward during thState the physicsinvolved.

.............................

(d) The speed limitof a truck is sho13.2.

3.1

collisionccident.

.............................[1 mark]

city, v of bothtely after

[2 marks]

car is throwne collision.concept

.............................[1 mark]

nd the load limitn in Diagram


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Diagram

(e) Explain why the speed lthe load limit must be ithe truck.

.........................................

.........................................

.........................................

2.5 FORCES2.6 IMPULSIVE FORCE & IMP

Question 14: Kedah 07Diagram 14.1 and Diagram 14.two eggs released from the saand drop on to Surface A andrespectively.

Diagram 14.1 Di

(a) What is meant by impuls

....................................................

(b) With reference to DiagraDiagram 14.2;

13.2

imit andposed on

................

................

................

[2 marks]

LSE

2 showme heightSurface B

gram 14.2

?

...............[1 mark ]

14.1 and

(i) Compare the forthat strike SurfacB.

.............................

(ii) Compare the timthe eggs on SurfSurface B.

...................................

(iii) Compare the chmomentum of thsituations.

...................................

(iv) State the relatithe force produand the time of i

.............................

(v) Suggest a suitablSurface A.

...................................

(c) Diagram 14.3 showused in driving a pilat a construction sit

e on the eggse A and Surface

.............................[1 mark ]

e of impact ofce A and

............................[1 mark ]

ange ine eggs in both

............................[1 mark ]

onship betweened in a collision

mpact.

.............................[1 mark ]

e material for

............................[1 mark ]

a pile hammerinto the ground.


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FIZIKMOZAC 2010

Explain how a large force is pby the pile hammer in drivinginto the ground.

....................................................

....................................................

....................................................

Question 15: Melaka 09A boy with mass 50 kg climbm wall from the ground level adown as shown in Diagram 1

Diagram 15

(a) (i) Name the energy gaineboy before the jump?

.......................................

(ii) State the energy changexperienced by the bothe leg hit the ground.

oducedhe pile

..............

.............

.............[2 Marks]

s up a 2.5nd jump5.

d by the

...............

ebefore

............................

(a) Based on the informDiagram 15, calculat(i) the speed of the

his legs touch th

(ii) the impulsivewhen the time ohis legs and the

(c ) Impulsive force cadamage. Suggestreduce the impactforce in eggs dropfrom a height durincarnival. .Your answer shoul

following criteria(i) The eggs casin

.........................

Reason

.........................

(ii) Method for soft

..........................

Reason

..........................

Question 16 (SPM 200Diagram 16 shows andropped onto a woodecracks after an impact.the egg just before the i

..........................

ation given oneoy just beforeground.

force producedf action betweenground is 0.03 s.

n caused severemethod tof the impulsivecompetitiona science

d base on the

g

.........................

........................[ 2 marks ]

landing :

..........................

..........................[ 2 markah ]

) Q2gg beingblock. The eggThe velocity ofmpact is 5 ms -1.


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FIZIKMOZAC 2010

Diagram 16

(a) Name the force involvedimpact.

.............................................

(b) Give one reason why thecracked after the impact.

.............................................

(c) The mass of the egg is 0.0Calculate the momentum jthe impact.

(d) Give one suggestion howwould avoid the egg fromwhen dropped from the saheight.

.............................................

2.8 Gravitational Force

Question 17 (SPM 2003)

uring the

.................[1 m]

gg

.................[1 m]

5 kg.ust before

[2 m]

youcrackingme

.................[1 m]

Figure 17 is a stroboscshows two steel balls ifall. Both balls are drosimultaneously from th

Diagram

(b) Observe the photog

two similarities betof the balls.

_________________

_________________

(c) Name one physicalcauses the balls to f

_________________

(d) Based on the positifalling balls, there isquantity that is cons(i) Name the quantit

______________

(ii) What is the valueand its unit?

______________

pic photographa state of free-

pedsame height..

17

aph and state

een the position

_____________

_____________ [2 m]

uantity whichail.

_____________ [1 m]

ns of the free-a physicaltant.y.

______________ [1 m]

of the quantity

______________ [ 1 m]


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(iii)State how the mass of aaffect the valued of thequantity stated in (c)(i).

____________________

(e) A ball is thrown vertically ua certain velocity.(i) What happens to the m

the ball as it moves up

____________________

(ii) Give one reasons for yoanswer.

____________________

Question 18 (SPM 2004)Figure 18.1 shows a feather adroplet falling from the sameThe mass of the feather and wdroplet is the same and bothdropped simultaneously at tim

Figure 18.1

ballhysical

________ [1 m]

pwards attion ofards?

________ [1 m]

ur

________ [1 m ]

d a watereight.

aterree t = 0.

Figure 1

(a) Name one forcefeather and the w

______________

(b) Using Figure 18.1surface area of tthe water droplet

______________

(c) Using Figure 18.1compare the chaof the feather androplet.

______________

______________

______________

(d) Using your answstate the relationrelationship betwarea and the final

______________

(e) The feather and tare dropped in aa velocity-time grmotion on both o

.2

cting on theater droplet.

______________ [1 m]

, compare thee feather and.

______________ [1 m]

and 18.2,ges in velocitythe water

______________

______________

______________ [3 m]

rs in (b) and (c),hip between the

een the surfacevelocity.

______________ [1 m]

he water dropletacuum. Sketch

aph to show thebjects.


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1.9 EQUILLIBRIUM OF FO

Question 19 SPM 1993

Two forces with magnitudesN act on an object Y as show18. The object Y is placed onhorizontal surface.

4

3 N

Figure 18

(a) By drawing a scaledparallelogram of forcesdetermine the resultantthe object Y.

(b) If the mass of object Y icalculate its acceleratiofrom the resultant force

[2 m]

CES

3 N and 4if Figurea smooth

toforce on

2.0 kg,n resulted.

(c) State the directioof a force that haon the object Y sis in equilibrium.

______________

Question 19: SPM 2008Diagram 19.1 shows twa large box. After somstill remains stationary.

Diagram 19.2 showsmoving forward with

velocity at a consta

(a) Based on the sit19.1 and situatio19.2,

(i) state similaritiemagnitudes anthe forces F 1 an

magnitudes :

n and magnitudes to be applied

that the object

______________

Q5boys pushing

time, the box

an aircrafta uniform

t height.

ation in Diagramin Diagram

about thedirections of

d F 2 , F3 and F 4 .

..................


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FIZIKMOZAC 2010

directions : .

(ii) What is the net force isituations?

(iii)Based on the answersand 5(a)(ii), name theconcept involved.

(b) (i) Another aircraft hasthan F 4 . Describe thof this aircraft.

(ii) Explain the answer i

Question 20 (SPM 1996)Figure shows a cyclist is ridinroad at a constant velocity. Thdownward force acting on theand the cyclist is 650 N. Thereaction of the front tyre is 30forward thrust is 200 N.

...............[2 marks]

both

[1 mark]in 5(a)(i)hysics

[1 mark]

F3 greatermotion

[1 mark]

5(b)(i).

.

.

.

.[2 marks]

g along ae total ofbicycleormalN and

(a) Calculate the nacting on the re

(b) Give one reas

resistance, Q sat that moment

(c) What will happeforward thrust i

(d) Why the cyclistwhen the bicyclstone.?

(e) Explain why thegets serious injinto the road wis very hard.

rmal reaction ,Pr tyre .

n why the total

hould be 200 N

n when theincreased?

thrown forwardruns over a

cyclist canries if he fallsich the surface


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Question 21 (SPM 2005)A student studies the effect of themovement of a lift on the readings of aweighing scale. The mass of the student

is 50 kg.In this study, the student stands on aweighing scale in a lift as show in thefollowing figure.

He records the readings of the weighingscale when the lift is at rest, moving upwith acceleration, moving up withuniform velocity, moving down withuniform velocity and moving down withdeceleration.The readings of the weighing scale inthe study are shown in the followingtable.

Movement of the lift Readingof theweighingscale/ kg

At rest 50Moving up withacceleration

60

Moving up withuniform velocity 50Moving down withuniform velocity

50

Moving down withdeceleration

60

(a) The mass of the student is 50 kg.

What is the weight of the student innewtons?

. N

(b) State two types of movement ofthe lift when the reading on the

weighing scale is equal to the massof the student.

1...

2..

(c) F is the resultant force that acts onthe student.R is the normal reaction of theweighing scale on the studentm is the mass of the studentg is gravitational accelerationWrite a general equation to showthe relationship between F, R, m and g .

(d) When the lift moves up withacceleration , the normal reactionis greater than his weight. Explainwhy ?

(e) (i) What is observed on thereading of the weighing scalewhen the lift moves down with anacceleration?

(ii)Give a reason for your answer in(e)(i).


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(ii) Compare the net force exertedin Diagram 5.1 and Diagram5.2

....................................................[1 mark]

(d) Based on your answers in (c)(i) and(c)(ii) , relate the situations inDiagram 25.1 and Diagram 25.2 tothe net force.

.............................................................

.............................................................[2 mark]

(e) Name the phenomenon shown inDiagram 25.1 and Diagram 25.2.

.........................................................[1 mark]

Question 26(SPM 2000)Figure 4 shows a high jump athlete ofmass 60 kg jumping over the bar ofheight 5.0 m. I,J, K, L, M, N, O, P and Qshow the different stages of the jumpmade by the athlete. The height of theathlete from the level of the bar is 0.2 m.

Figure 4

(a) Why is the athlete required toaccelerate to a certain velocity at thestage of J to K before he begins tojump?

(b) Explain why the pole has to be bendat L.

(c) Calculate gravitational potentialenergy of the athlete.

(d) What is the acceleration of theathlete at stage P?

(e) Why is a rubber mattress placed inthe area where the athlete lands?

Question 27 (SPM 2007 paper 2 A4)Diagram 27 shows a worker lifting aload of mass 20 kg using a pulleysystem. The worker applies a force of220 N to pull the rope down a distanceof 0.5 m. The load is raised to a heightof 0.5 m.


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(a) What is meant by work?

____________________

(b) Calculate the work don

(i) by the worker to puldown a distance of

(ii) on the load to raise toof 0.5 m.

(c) (i) Compare the work d4(b)(i) and 4(b)(ii). ____________________

(ii) state why there is a diffbetween the work doneand 4(b)(ii).

____________________

2.10 WORK & ENERGY

Question28: Melaka Mid 08

________

l the rope.5 m.

a height

ne in

_______

rencein 4(b)(i)

________

Diagram 28 shows a bositting on the top end osliding board at a heighthe ground. The boy sliinclined board with thems -1 before he touches

Diagr

(a) Name the energy

boy at point P.

............................

(b) Calculate the enby the boy:

(i) At point

(ii) At point

(c) (i) Compare theconsumes in

28(b) (ii).

......................

(iii) State why tdifferenceenergy co28(b)(i) an

......................

y of mass 30 kgf an inclinedt of 2.5 m fromes down the

velocity of 4the ground.

m 28

gained by the

............................[1 mark]

ergy consumes

P.

[2 marks]

Q.

[2 marks]

energy28(b) (i) and

.............................

[1 mark]here is abetween thesumes in28(ii)

............................[1 mark]


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Question 29: Perak 07Diagram 29.1 and Diagram 29.student throwing a javelin evedifferentthrowing techniques.The forces used by the studen

same. The angles of projectiodifferent.

(a) Observe Diagram 29.1 an29.2.(i) Compare the distance

javelin travel from A t

......................................

(ii) What happens to distjavelin thrown when tprojection is less thanof projection as showDiagram 29.2?......................................

(b) State the shape of the jthat it moves with miniresistance through air.

.........................................

(c) The force which acts onjavelin is 10 N and the tdistance 70 m, calculat

2 show ant using

t are the

are

d Diagram

of theB.

................[1 mark]

nce of thee angle ofthe anglein the

.................[1 mark]

velin soum

.................[1 mark]

therownthe work

done by the stud29.2.

(d) (i) State the chaexperienced

from A to B itechniques.

.......................

(ii) State the enerwhen the javeground.

........................

Question 30: Johor 09Diagram 30.1 shows twtrolleys P and Q on a frihorizontal runway. Trolwith steel bars.

Diagram

A horizontal force of 10P and Q.(a) (i) Trolley Q moves

trolley P. Explainobservation.

.............................

(ii) State the physicexplains your an

............................

nt in Diagram

[2 marks]

ges of energyb y the javelin

both

...........................[1 mark]

gy producein touches the

............................[1 mark]

identicalctionlessley P is loaded

0.1

N acts on trolley

faster thanyour

............................[1 mark]

l law thatswer in (a)(i).

............................[1 mark]


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(b) Trolley Q then moves dfrictionless slope as shDiagram 30.2. There isresistance acting on thwhen it moves down th

On the Diagram 30.2, when this moving down the frictionleslabel,

(i) The direction of the fto gravity(ii) The direction of the f

to air resistance

(c) State the effect of the airesistance to the motioQ along frictionless sloDiagram 30.2

.........................................

(d) Compare the motion of trthe frictionless slope andsurface.

.........................................

(e) (i) The mass of trolley Q iCalculate the gravitatipotential energy of trothe top of the slope.

(ii) The kinetic energy of tQ at the top of the sloCalculate the total enetrolley.

wn thewn inirtrolleyslope.

trolley Qs slope

orce dueorce due

[2 marks]r

of trolleye in

.................

[1 mark]ol ley Q atthe rough

.................[1 mark]

s 500 g.nal

lley Q, at

[2 marks]

he trolleye is 3.0 J.

rgy of the

2.11 ELASTICITY

Question 31 (SPM 2004Diagram 31 shows thean apparatus in an expdetermine the relationsextension e of a springThe relationship of e withe graph in Diagram 31

Figure 31

(a) (i) State the SI unit

(ii) State the relationand W.

(iii)Name the scientiin the relationshi

(b) (i) What is the elastispring.

(ii) Mark with a croslimit of the sprin

[3 marks]

rrangement ofriment toip between the

T with weight W.th W is shown in.1

.1

of weight.

ship between e

ic law involvedstated in (a)(ii).

c limit of a

(x) the elasticon the graph.


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(c) Based on the graph in figudetermine the force constaspring, k,.

(d) The spring stores energy

extended. Calculate the enstored in the spring when iextended by 4 cm.

(e) Another spring, identical tis added to the arrangemeFigure 2.1. This new arranshown in Figure 2.2. The eis then repeated.

Diagram 31.2

Sketch the graph of x againstexperiment in Diagram 31.1.

Question 33: Kedah 09Diagram 33 shows the graphagainst extension for three spand R.

e 14.1,nt of a

hen it is

ergyis

spring T,t inement is

xperiment

F for this

f forcerings P, Q

(a) (i) A law states thata spring is directlto the force applilimit of the sprinexceeded. Name

.............................

(ii) On the graph inX at the elastic lspring.

(b) The spring stores eextended.(i) Name the energ

spring when it is

............................

(ii) Calculate the enspring R when it8.0 cm.

the extension ofy proportionald if the elasticis not

this law.

...........................[1 mark]

iagram 33, markimit for each

[2 marks]

nergy when it is

stored in theextended.

............................[1 mark]

rgy stored ins extension is

[3 marks]


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(c) The springs are to be used in aNewton balance to measure amaximum load of mass 8 kg.(i) What is the maximum weight of

the load?

.....................................................

[1 mark](ii) Which spring is the most

suitable to be used in theNewton balance. Explain youranswer.

......................................................[2 marks]

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Chapter 2 P2 Section a Intensive