BAHAGIAN A
No
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Answer
|
Marks
|
||||
Question 1
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||||||
1(a)(i)
(ii)
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Mercury
/ merkuri / raksa
Expand
/ mengembang
|
1
1
|
||||
(b)(i)
(ii)
|
X
Smaller
scale is the smallest / skala terkecil paling kecil
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1
1
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||||
Jumlah
|
4
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|||||
Question 2
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||||||
2(a)(i)
(ii)
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Rate
of change of displacement / kadar perubahan sesaran / sesaran
Masa
DE
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1
1
|
||||
(b)
|
Total
displacement = ½(12 + 6)(10) - ½(2)(10) - gantian
= 80 m - jwpn dgn unit betul
|
1
1
|
||||
| (c) |  |
1
|
||||
Jumlah
|
5
|
|||||
Question 3
|
||||||
3(a)
|
3.0 kg
ms-1
|
1
|
||||
(b)(i)
(ii)
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Opposite
Same /
equal / sama
|
1
1
|
||||
(c)(i)
(ii)
|
m1v1 + m2v2
= 0
(1.5)(2)
+ (0.01)( v2) = 0
v2 =
300 ms-1
0
|
1
1
1
|
||||
Jumlah
|
6
|
|||||
Question 4
|
||||||
(a)
|
15 N
|
1
|
||||
(b)(i)
(ii)
(iii)
|
Angle
in Diagram 4.2 > Diagram 4.1
dgn
gambarajah betul (cth seperti di
bawah)
skala
yang sesuai
T1 =
8.8 N + 0.1
T2 =
10.8 N + 0.1
The
bigger the size of angle, the greater the tension of the strings.
|
1
1 + 1
1 + 1
1
|
||||
Jumlah
|
6
|
|||||
Question 5
|
||||||
(a)
|
Friction
// weight // pulling
|
1
|
||||
(b)
|
Force
exerted on box in Diagram 6.1 less than 6.2
|
1
|
||||
(c)
|
Time
taken to move box in Diagram 6.1 is longer than than 6.2
|
1
|
||||
(d)
|
Acceleration
in Diagram 6.1 is smaller than 6.2
|
1
|
||||
(e)(i)
(ii)
|
The
greater the force the higher the acceleration
Newton’s
Second Law
|
1
1
|
||||
(f)(i)
(ii)
|
Acceleration
decrease
Acceleration
inversely proportional to mass.
|
1
1
|
||||
Jumlah
|
8
|
BAHAGIAN B
No
|
Answer
|
Marks
|
||||||||
6(a)(i)
|
Speed is
the rate of distance travelled by an object
|
1
|
||||||||
(a)(ii)
|
In
Diagram 6.1, forces on car and tree are in the opposite direction
but
magnitude are the same.
Magnitude
of force in Diagram 6.2 is bigger than in Diagram 6.1.
Speed of
car in Diagram 6.2 is higher than in Diagram 6.1.
The
bigger the magnitude of force, the higher the speed.
|
1
1
1
1
1
|
||||||||
(b)
|
When the
ball is thrown up,
the
kinetic energy decrease / gravitational potential energy increase
and it
decelerate
Gravitational
potential energy is maximum as the ball reaches the highest height before it
goes down.
As the ball goes down, the kinetic energy
increase / the accelerates
|
1
1
1
1
|
||||||||
(c)
|
|
1
(design)
1
(label)
|
||||||||
(c)(i)
|
Material
for container – plastic
because
it light
|
1
|
||||||||
(c)(ii)
|
Volume
of water – one third (1/3) of the
bottle’s volume
because
it left enough space for the compressed air
|
1
1
|
||||||||
(c)(iii)
|
Launching
angle stable - 45°
because
it gives the best projectile.
|
1
1
|
||||||||
(c)(iv)
|
Fin at
the side of the rocket –
for
rocket stability
|
1
1
|
||||||||
Jumlah
|
20
|
BAHAGIAN C
No
|
Answer
|
Marks
|
||||||||||
7(a)(i)
|
Speed is
the rate of distance travelled by an object
|
1
|
||||||||||
(a)(ii)
|
- Fan
produces a high speed movement of air backward.
- This
produces a large momentum backward.
- By
conservation of momentum, an equal magnitude
but opposite direction
of momentum is produced and acted on the
boat.
- So the boat will move forward.
|
1
1
1
1
1
|
||||||||||
(b)(i)
(ii)
|
m
(15) = (150 + 20)(6)
m = 68 kg
Total momentum of air (backward) equal to
total momentum of the boat (forward)
|
1
1 + 1
1
|
||||||||||
(c)
|
Most suitable is P,
Because it has flat bottom shape, small size
of motor, body material from aluminium and propeller material from hard
stainless steel
|
1+1
1+1
1+1
1+1
1
1
|
||||||||||
Jumlah
|
20
|
JAWAPAN UJIAN 2 (JULAI 2012) T5
BAHAGIAN A
1
|
D
|
6
|
C
|
11
|
D
|
16
|
A
|
2
|
B
|
7
|
C
|
12
|
D
|
17
|
D
|
3
|
B
|
8
|
D
|
13
|
A
|
18
|
D
|
4
|
A
|
9
|
C
|
14
|
C
|
19
|
B
|
5
|
B
|
10
|
C
|
15
|
B
|
20
|
D
|
BAHAGIAN B
No
|
Answers
|
Mark
|
||||
Q1
|
||||||
(a)
(c)
|
|
1
1
|
||||
(b)(i)
|
North
|
1
|
||||
(ii)
|
Right – hand grip rule
|
1
|
||||
(d)
|
Increase the number of
turns of the coil //
Increase the current //
Use soft iron as the
core
|
1
|
||||
JUMLAH
|
5
|
|||||
Q2
|
||||||
(a)
|
Lenz’s
Law state that the direction of current induced will oppose the change
which causes of it
|
1
|
||||
(b)
|
P
– North
Q
- South
|
1
1
|
||||
(c)
|
 |
1
|
||||
(d)
|
Increase
the rate of motion of magnetic bar //
Increase
the number of turn of coin in the solenoid //
Increase
the strength of the bar magnet
|
1
|
||||
(e)
|
Galvanometer
pointer will deflected in opposite
direction
|
1
|
||||
JUMLAH
|
7
|
|||||
Q3
|
||||||
(a)(i)
|
Soft
iron
|
1
|
||||
(ii)
|
Easily
to magnetized and demagnetized
|
1
|
||||
(iii)
|
V = 125
240 2000
V =
15V dengan unit yang betul
|
1
1
|
||||
(b)(i)
|
Normal brightness means that the voltage supplied to a bulb is the same
as the voltage ratings on the bulb.
|
1
|
||||
(ii)
|
12 + 12 + 12 = 36 V
|
1
|
||||
(iii)
|
Power
input = Power output
V1I1
= V2I2
(240) I1 = (36) x (2) gantian
betul
I1 = 0.3 A dengan
unit yang betul
|
1
1
|
||||
JUMLAH
|
8
|
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