UJIAN BULAN MAC 2010 FIZIK TINGKATAN 4
Name
: ………………………… ……………………………. ….
Form
: 4 ……………
PART A: Write your answers on the space provided at the end of questions. 1
2
3
Which of the following is NOT a base unit? A Joule B Ampere C Kilogram D Second
8
Which of the following prefixes of units are are arrang arranged ed in descen descendin ding g order order of magnitude? A deci, micro, centi, mili B deci, centi, mili, micro C centi, deci, micro, mili D centi, mili, micro, deci
9
Which of the following frequencies in Hz is the same as 150.2 GHz?
10
A C
4
B D
C
A C
B
Which pair is correct? Quantity A Force B Density C Area D Acceleration
30 m s-1 60 m s-1
2.9 MV = 2.9 x 109 V 90 µA = 9.0 x 10-5 A 0.06 GJ = 6.0 x 109 J 35 dm = 3.5 x 10-1 m
3.45 x 103 m 3.45 x 107 m
B D
3.45 x 104 cm 3.45 x 1012 µm
Four students A, B, C and D use metre rule (R), vernie vernierr calipe calipers rs (V) (V) and micro microme meter ter screw screw gauge (M), to measure the thickness of a book. The measurements obtained are recorded in a table below. Which record is correct?
A B C D
D
B D
Which Which of the following following measureme measurements nts is the shortest? A C
11
20 m s-1 50 m s-1
Whic Which h of the the follo followi wing ng show showss the the corr correc ectt conversion of units? A B C D
1.502 x 107 1.502 x 109
A, B, C and D show he shooting marks on the target. Which of the following show the highest precision? A
5
1.502 x 10-7 1.502 x 1011
108 km h-1 is equivalent to
R (cm) 4.213 4 .2 4.213 4.21
V (cm) 4.21 4.21 4 .2 4.213
M (cm) 4 .2 4.213 4.21 4 .2
12 S.I Unit kg m s-1 kg m-2 m3 m s-2
6
Which Which of the followin following g is a derive derived d quantity? A Length B Mass C Temperature D Voltage
7
The Hitz FM channel broadcasts radio
What is the reading on the vernier calipers in figure above? A 6.18 cm B 6.08 cm C 6.80 cm D 6.10 cm
13
What is the use of the strip of mirror in the
1
waves at a frequency of 92.8 MHz in the north region. What is the frequency of the radio wave in Hz? A C
9.28 x 104 9.28 x 107
B D
ammeter? A To avoid parallax error B To allow the current to flow easily C To enable the reading to be taken easily D To reflect light
9.28 x 105 9.28 x 1010
1 4
17
What is the speed of a cheetah if it sprints 100 m in 4 s? 2.5 m s-1 5.0 m s-1
A C
Which statement is true? A Voltmeter X is more accurate than Voltmeter Y. B Voltmeter X is more sensitive than voltmeter Y. C Voltmeter X is more consistent than Voltmeter Y. D Voltmeter Y is more sensitive than voltmeter X.
The picture shows two ticker tapes. Tape A was attached to trolley A while tape B was attached to trolley B. Which of the following statements is true about those trolleys? A B C
19
What is the reading on the micrometer screw gauge in figure above?
1 6
4.21 mm 0.421 mm
B D
A C
distance displacement
B D
Trolley A is faster than trolley B. Both trolleys move at the same speed. Trolley A has lower speed than trolley B
Which of the following statements is false? Velocity has both magnitude and direction. Displacement is a vector quantity. Acceleration is the rate of change of displacement.
A
4.71 mm 0.471 mm
Which of the following is NOT a scalar quantity?
25 m s-1 10 m s-1
18
1 5
A C
B D
B C
20
speed density
Which of the following statements does not indicate zero acceleration? A B C
A stationary car. A car is moving at constant velocity. A car is moving with an increasing velocity.
PART B: Write your answer on the answer space. 1
Convert the following:
a) 55 cm = ___________ m
____ or ____________ x 10 m ____
b) 56 MJ = ___________ J or _____________ x 10
J
____
2
c) 9.8 mg = ___________ kg or __________ x 10
kg
____ d) 77 µs = ____________ s or ___________ x 10 s ___ e) 92.8 MHz = ______________ Hz or ____________ x 10 Hz ( 10 marks )
2
Mariam leaves her house and jogs north 300 m to the street lamp on the corner. She turns west, jogs another 400 m and gets to the angsana tree 2 minutes after leaving home. a) Which of the three distances given in the figure is the displacement, s? ( 1 mark )
b) What is Mariam’s average velocity? ( 2 marks )
c) What is the total distance run by Mariam? ( 1 mark )
d) What is her average speed during the two minutes? ( 2 marks )
3
Fill in the blanks. a) A constant speed of 20 ms-1 = A distance of _____________ is traveled every second.
b) A constant velocity of -30 ms-1 = A _____________ of 30 m is traveled every second to the left.
3
c) A constant acceleration of 5 ms-2 = Speed ____________ by 5 ms-1 every ___________.
d) A constant velocity of 30 ms-1 = A displacement of ______ m is traveled every second to the ____________.
4
A cargo ship sails across the Straits of Malacca towards Klang North Port. Within a given time it can accelerate 0.25 ms-2 in 52 s from its initial velocity of 2 m s-1. Determine its final velocity at the end of the accelerating period. (Hint: Use, v = u + at ) ( 3 marks )
5
A lorry approaches a traffic light at 15 m s-1. The light turns red and the driver applies the brakes at a distance of 25 m from the junction and accelerates at -5 m s-2. Can the lorry come to a complete stop before reaching the stop line at the traffic light? Show your working solution. ( Hint : Use, v2 = u2 + 2as ) ( 5 marks )
Answers space: 1
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12
3
13
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14
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15
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16
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17
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18
9
19
4
10
20
Disediakan oleh:
Disemak oleh:
Disahkan oleh:
……………………. (Pn. Rafiqah bt. Jamil)
……………………… (Pn. Habibah bt Jusoh)
………………………. (Pn. Shamsinar bt. Ahmad)
UJIAN BULAN MAC 2010 FIZIK TINGKATAN 4 ANSWERS SCHEME PART A
1
A
11
B
2
B
12
A
3
C
13
A
4
C
14
D
5
D
15
B
6
D
16
C
7
C
17
B
8
B
18
C
9
B
19
C
10
B
20
C
PART B 1
a) 55 cm = 0.55 m or 5.5 x 10-1 m b) 56 MJ = 56 000 000 J or 5.6 x 107 J c) 9.8 mg = 0.000 0098 kg or 9.8 x 10-6 kg d) 77 µs = 77 000 000 s or 7.7 x 10-5 s e) 92.8 MHz = 92 800 000 Hz or 9.28 x 107 Hz
2
a) s =500 m, b) v = s/t = 500 m/2x60 s = 4.167 m s-1, c) s = 700 m, d) v = s/t = 700 m/2x60 s = 5.83 m s-1
3
a) 20 m, b) displacement, c) goes up/ increase, second d) 30 m, right.
4
v = u + at v
= 2 + (0.25 x 52) 15 m s-1
v=
5
2
2
v = u + 2as
0 = (15)2+ 2(-5 ) s s = 225/ 10 s = 22.5 m, 22.5 m < 25 m Since 22.5 m < 25 m, so the lorry can come to a complete stop before the stop line.
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