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Fizik
Kertas 1
MEI
2010
1 Jam 15 minit
SEKOLAH MENENGAH KEBANGSAAN PUE!I AMPANG
JALAN AMPANG
55000 KUALA LUMPU!
PEPE!IKSAAN PE!ENGAHAN AHUN
INGKAAN "
FI#IK
KE!AS 1
1 JAM 15 MINI
JANGAN BUKA KE!AS SOALAN INI SEHINGGA $IBE!IAHU
1. Kertas soalan ini mengandungi 50 s%a&an.
2. Jawab sem'asoalan.
3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.4. Gambar rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali
dinyatakan.
5. nda dibenarkan menggunakan kalkulator sainti!ik yang tidak bolehdiprogram.
". #atu senarai rumus disediakan di halaman 2.
$%#&$%K' ()&*+ $%#&,K ()&*
----------------------
--------------------------,uhammad %at /. %smail 0n. awiah /t. *aji bd. Ghani
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Kertas soalan ini mengandungi 2 halaman bercetak
The following information may be useful. The symbols have their usual meaning..
1. a = t
uv
2. v2= u2+ 2as
3. s = ut +2
1at2
4. Momentum = mv
5. F = ma
6. g = 1 m s!2
". #ineti$ %nergy = 1 mv2
2
&. 'otential energy = mgh
(. %lasti$ 'otential %nergy = 1 F)
2
1. 'ower* ' = energy
time
2
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%a$h uestion is followe, by either three* four or five o-tions. hoose the besto-tion for ea$h uestion* then bla$/en the $orre$t s-a$e on the answer sheet.
1. hich o! the !ollowing arrangements o! the pre!ies is in descending order
,illi+ centi+ micro+ deci
/ $eci + centi+ milli+ micro+6 6enti+ deci+ milli+ micro
$ ,icro+ milli+ centi+ deci
2.7igure 1 shows the scale o! a micrometer screw gauge.
hat is the reading o! the micrometer
8.31 mm
/ 8.81 mm
6 8.81 cm
$ 8.31 cm
3. v9ms:1
hich statement about the graph is correct
; < 1 t = 5/ ; < 2t = 1
3
t9s5
1
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6 ; < :2t = 1
$ ; < 5t :1
4. hat is the e@ui;alent ;alue !or 4 ms:1in kmh:1
. 1.1 1:5
/. 1.44 1:5
6. 14.4
$. 144
&. 144
5. mong the 4 sets o! archery results + /+ 6 and $ shown in !igure+ which set is
consistent but not accurate
". car is tra;eling at a speed o! A km h:1. hat is its speed in m s :1
A. ms:1
/ 18. ms:1 6 25. ms:1
$ 3. ms:1
& 2. ms:1
B. Che graphical method is an easy and e!!ecti;e method o! analying eperimental
results because a graph can
produce accurate eperimental results./ impro;e the accuracy o! eperimental measurements.
6 impro;e the sensiti;ity o! the measuring instrument.$ clearly show the relationship between the eperimental @uantities
4
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8. hich o! the !ollowing is true regarding the motion o! an object ha;ing eroacceleration
Che object is mo;ing with uni!orm ;elocity / Che object is mo;ing with minimum ;elocity.
6 Che object is mo;ing with maimum ;elocity
A. /ased on the !igure 3 shown+
#tate the relationship between mass and acceleration
. cceleration is in;ersely proportional to mass
/. cceleration is directly proportional to mass
6. cceleration is in;ersely proportional to
m
1
1. Che ad;ertisement o! a car manu!acturer states that their car has bumpers !ittedwith shock absorbers. hat is the additional ad;antage o! this !eature
Co ensure that the car is not smashed up in an accident./ Co ensure that the car will decelerate in an accident.
6 Guarantees that all passengers are not injured in an accident.
$ Co increase the time inter;al o! interaction in a collision so that the impulsi;e!orce can be minimied.
11. $a;id /eckham kicks a ball !rom a !ree kick point with a speed o! 1 ms:1and theball reaches the goal post a!ter 2 s. %! the distance !rom the !ree kick point to the
goal post is 12 m+ calculate the speed o! the ball when it reaches the goal post.
. 1.5 ms:1
/. 2. ms:1
6. 2.5 ms:1
$. 3. ms:1
5
9 kg:1
a9ms:2
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&. 3.5 ms:1
12. %mpulsi;e !orce is de!ined as
. Che change in impulse
/. Che di!!erence in pressure6. Che rate o! change in momentum
13. 7igure 4 shows the path taken by a trolley. Che trolley passes through K with acertain ;elocity. K)+ ), and ,' are all e@ual in length.
hich o! the !ollowing is true o! the motion o! the trolley !rom K to '
0ath taken ,otion
K to ) >ni!orm ;elocity/ ) to , cceleration
6 , to ' $eceleration
"
K
) , '
7rictioncompensated
runway
?ough
sur!ace
#mooth
sur!ace
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14. hich o! the !ollowing graphs show motion at a constant ;elocity
15. 7igure 5 shows the ;elocity:time graph o! a mo;ing object. 7rom the !ollowing
statements+ which one is true regarding the acceleration o! motion
time
displacement
time
acceleration
time
;elocity
time
acceleration
/
6
$
B
v9ms:1
2
15
B 15 25 t9s
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cceleration occurs at the !irst se;en seconds.
/ Che acceleration and deceleration respecti;ely are non uni!orm a!ter the !irstse;en seconds.
6 Che ;alue o! the acceleration is bigger than the ;alue o! deceleration.
$ Che acceleration is ero !or the !irst se;en seconds.
1". Delocity+ acceleration+ !orce and energy are categoried as ---------------@uantities
/ased
/ $eri;ed6 #calar
6 Dector
7%G>?& "
1B. Graph o! !igure " shows the relationship between y and . Che relationship
between p and @ represented by the e@uation.
. r)+
-y +=
/. r)-
+y +=
6. r)+
-y +
=
$. r)-
+y +
=
8
y
r@
p
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$etermine the ;elocity o! the !oundation pile immediately a!ter being hit by the pile dri;er.
3. ms:1
/ 14. ms:1
6 4.28 ms:1
$ .53 ms:1
& .43 ms:1
2. hich o! the !ollowing is correct
. 34 mm2 < 3.4 1:5m2
/. 4 mm
2
< 4. 1
:5
m
2
6. A2 mm2 < A.2 1:"m2
$. 24 mm2 < 2.4 1:4m2
21. 7igure A shows a section o! a ticker tape which was pulled by a trolley through a
ticker timer .
$irection o! motion
%! the ticker timer is operated by a power supply with a !re@uency o! 5 *+ whatis the acceleration o! the trolley
5 ms:2
/ 8 ms:2
6 1 ms:2
$ 2 ms:2
22. hich o! the object has the greatest inertia
. /
1
( ( ( ( ( ( ( ( ( ( ( (
.4 cm 2.4 cm
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6. $.
23. hich o! the !ollowing graphs below show the mo;ement o! an object that
mo;es with an acceleration
7%G>?& 1
24. 7igure 1 shows the ;elocities and the directions o! two identical trolleys be!ore
a collision. !ter the collision+ the trolleys stick together. hat is their ;elocitya!ter the collision
.4
v
11
time
$isplacement
time
Delocity
Delocity
$isplacement 6
/$
2vvplastecine
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/.2
v
6.4
3v
$. v
&.23v
25.
Jack rides his bicycle starting !rom rest and accelerates at a uni!orm rate o!.5 ms:2. hat is the time taken to tra;el a distance o! 1 m
5. s/ 1. s
6 15. s
$ 2. s& 25.s
2".)ar Mass *k+, -e&%.it/ *ms1,
2 000 5
1 500 3
# 1 000 4
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7rom 7igure 12+ which o! the !ollowing statements is correct
. 6ar has the greatest inertia.
/. 6ar E has the greatest momentum.6. 6ay F has the greatest momentum.
$. 6ar E has the greatest kinetic energy
2B. n eperiment is carried out to !ind the relationship between mass andacceleration o! a trolley on a wooden runway. Che eperiment is repeated by
adding the number o! trolleys. Che responding ;ariable in this eperiment is
12
1 m
u < t <
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. the length o! the wooden runway.
/. acceleration
6. mass$. time
28.
7igure 13 shows !our blocks o! wood stacked on top o! each other. /lock E issuddenly knocked out o! the stacks with a hammer. /lock F does not !ollow the
direction o! mo;ement o! block E because it has
weight
/ momentum
6 inertia $ !riction
2A. Che cylinder oil tank o! &n. lis car is leaking. )ubricant spot are seen along the
road !rom to / as shown in 7igure 14.
%t can be concluded that &n lis car is mo;ing with H
A( constant acceleration
B( constant deceleration
)( ero acceleration
$( acceleration that is decreasing constantly.
13
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/
&n. lis car
1 m 15 m 2 m
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3. tick on a ticker tape means HH.
A( the distance between two dots
B( the time taken to make two conse@uence dots.
)( the speed o! the motion o! the ticker tape.
$( Che !re@uency o! the ;ibration.
31. hich o! !ollowing statements best describes an elastic collision between two
objects
A (nly momentum is conser;ed.
B (nly kinetic energy is conser;ed.
) ,omentum and kinetic energy are conser;ed.
$ Cotal energy+ momentum and kinetic energy are conser;ed.
32. n object is mo;ing with ero resultant !orce. hich o! the !ollowing in!erence is
not true
A( %ts ;elocity is constant
B( %ts acceleration is ero
)( %ts displacement is ero
$( %t has encountered a constant resistance.
33. Che 7igure 15 shows !orces + 71and 72+ eerted on a wooden block placed on a
table sur!ace. Che !riction between the block and the table sur!ace is 2 '.
hich pair o! !orces 71and 72causes the wooden block to mo;e with anacceleration
F1 N F2 NA B A
B 5 B
) " 4
$ 3 2
E 4 1
14
71 72
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34. hat is the property o! a body which tends to resist changes acting on it
A( %nertia
B( %mpulse
)( &nergy
$( 0ower.
35. man o! mass 5 kg stands on a stationary boat o! mass 25 kg. 7igure 1"
shows him jumping out o! the boat on to a jetty at a ;elocity 4 ms:1.
6alculate the ;elocity o! the boat as the man jumps.
A 2 ms:1
B 4 ms:1
) " ms:1
$ 8 ms:1
E 1 ms:1
3".
7%G>?& 1B
7igure 1B shows a high:jumper !alls on a thick mattress. Che purpose o! puttinga mattress a!ter the bar is to
A( decrease the impulsi;e !orce
B( decrease the stopping time o! the high:jumper.
)( decrease the ;elocity o! the high:jumper.
15
v< 4 ms:1
7%G>?& 1"
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3B. hich o! the !ollowing isn%t a sa!ety !eature installed in a ;ehicle
A &ngine capacity
B utomaticair bag
) 6ollapsible steering wheels
$ #hatterproo! windscreen glass
38. 6 An %78e.t at rest ten9s t% remain at rest (
An %78e.t in m%ti%n ten9s t% remain in m%ti%n( :
Che abo;e statements are eplained by the concept o!
A ;ectors
B !orce
) inertia
$ density
3A. $iagrams below show the same blocks o! wood on a smooth table. 7our di!!erentpairs o! !orces are acting on the block. hich pair o! the !orces will gi;e the
greatest acceleration towards the block
A
B
)
$
1"
B ' 8 '
3 ' A '
5 ' A '
8 ' 3 '
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4.
5 g !ootball is mo;ing at a ;elocity o! 1 ms :1. player dashes !orward and
kicks the ball so that it mo;es in the opposite direction at a ;elocity o! 2 ms :1.
hat is the impulse eperienced by the ball
A 5 's
B 1 's
) 15 's
$ 5 'sE 15 's
41. ;ernier calipers is shown in diagram below
Che ;ernier calipers is used to measure the diameter o! a marble. Che reading
produced has to be
1B
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A subtracted by .B cm
B added with .B cm
) subtracted by .3 cm
$ added with .3 cm
42. Che table shows the results obtained !rom an eperiment to eamine the resisti;ity
o! a wire
$iameter o! wire 9 mm
0iameter wayar mm
6urrent 9
rus
0otential di!!erence 9 D
ea /eu-ayaan
.4 .3" 3."
.8 .41 3.8
1.2 .55 4.5
1." .B2 5.2. .88 5.1
hich one o! the !ollowing statements is tr'eabout the eperiment
Che smallest scale on the ammeter is .2 / Che smallest scale on the ;oltmeter is .1 D
6 Che diameter o! the wire is the responding ;ariable
$ Che diameter o! the wire is measured with ;ernier calipers
43. hich o! the !ollowing shows the relation between the base @uantities !or density
lengthlengthlength
mass
/time
lengthmassmass
6masslength
timetime
$timelengthlength
lengthmass
44.hich o! the !ollowing steps can reduce the paralla error while recording the;alue o! current !rom an ammeter
>se more sensiti;e ammeter/ 6alculate the a;erage ;alue !rom the repeated readings
6 >se a magni!ying lens to read the reading !rom the ammeter
$ >se an ammeter with a plane mirror underneath the pointer needle
18
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Masa*
ts10
45. Che 7igure 2 shows a graph plotted !rom an eperiment
hich o! the !ollowing statement about the graph is n%ttrue
Che title o! the graph is graph !orce+Fagainst time+t/ Cime* tis the manipulated ;ariable
6 Che gradient o! the graph is 4 's:1
$ Che !orce is directly proportional to the time
4". Che !ollowing materials can reduce the impulsi;e !orce e;.e
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A( mo;e with an increasing ;elocity.
B( mo;e with decreasing ;elocity.
)( mo;e with a constant ;elocity.
$( remain stationary.
48. 7igure 22 shows the ;elocity:time graphs o! dnan+ *amid and )im
respecti;ely tra;elling along a straight road.
%! all the three o! them started their journey !rom the same place at the same time+
arrange their name in accordance to increasing order o! their displacements !rom
the starting point.
A( dnan+ *amid+ )im
B( dnan+ )im+ *amid
)( *amid+)im+ dnan
2
1 2 3 4
"
4
2
;9ms:1
t9s 1 2 3 4
"
4
2
;9ms:1
t9s
1 2 3 4
dnan *amid
"
4
2
;9ms:1
t9s
)im
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