UJIAN BULAN MAC 2010FIZIK TINGKATAN 4

Name : ……………………………. Form : 4 ……………

PART A: Write your answers on the space provided at the end of questions.

1 Which of the following is NOT a base unit?

A Joule B AmpereC Kilogram D Second

8 108 km h-1 is equivalent to

A 20 m s-1 B 30 m s-1

C 50 m s-1 D 60 m s-1

2 Which of the following prefixes of units are arranged in descending order of magnitude?

A deci, micro, centi, miliB deci, centi, mili, microC centi, deci, micro, miliD centi, mili, micro, deci

9 Which of the following shows the correct conversion of units?

A 2.9 MV = 2.9 x 109 VB 90 µA = 9.0 x 10-5 AC 0.06 GJ = 6.0 x 109 JD 35 dm = 3.5 x 10-1 m

3 Which of the following frequencies in Hz is the same as 150.2 GHz?

A 1.502 x 10-7 B 1.502 x 107

C 1.502 x 1011 D 1.502 x 109

10 Which of the following measurements is the shortest?

A 3.45 x 103 m B 3.45 x 104 cmC 3.45 x 107 m D 3.45 x 1012 m

4 A, B, C and D show he shooting marks on the target. Which of the following show the highest precision?

A B

C D

11 Four students A, B, C and D use metre rule (R), vernier calipers (V) and micrometer screw gauge (M), to measure the thickness of a book. The measurements obtained are recorded in a table below.Which record is correct?

R (cm) V (cm) M (cm)A 4.213 4.21 4.2B 4.2 4.21 4.213C 4.213 4.2 4.21D 4.21 4.213 4.2

5 Which pair is correct?Quantity S.I Unit

A Force kg m s-1

B Density kg m-2

C Area m3

D Acceleration m s-2

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What is the reading on the vernier calipers in figure above?

A 6.18 cm B 6.08 cmC 6.80 cm D 6.10 cm

6 Which of the following is a derived quantity?

A Length B MassC Temperature D Voltage

7 The Hitz FM channel broadcasts radio waves at a frequency of 92.8 MHz in the north region. What is the frequency of the radio wave in Hz?

A 9.28 x 104 B 9.28 x 105

C 9.28 x 107 D 9.28 x 1010

13 What is the use of the strip of mirror in the ammeter?

A To avoid parallax errorB To allow the current to flow easilyC To enable the reading to be taken

easilyD To reflect light

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Which statement is true?

17 What is the speed of a cheetah if it sprints 100 m in 4 s?

A 2.5 m s-1 B 25 m s-1

C 5.0 m s-1 D 10 m s-1

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.

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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 Trolley A is faster than trolley B.B Both trolleys move at the same speed.C Trolley A has lower speed than trolley B

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What is the reading on the micrometer screw gauge in figure above?

A 4.21 mm B 4.71 mmC 0.421 mm D 0.471 mm

19 Which of the following statements is false?

A Velocity has both magnitude and direction.

B Displacement is a vector quantity.C Acceleration is the rate of change of

displacement.

16 Which of the following is NOT a scalar quantity?

A distance B speedC displacement D density

20 Which of the following statements does not indicate zero acceleration?

A A stationary car.B A car is moving at constant velocity.C A car is moving with an increasing

velocity.

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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

_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 )

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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.

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 11

2 12

3 13

4

4 14

5 15

6 16

7 17

8 18

9 19

10 20

UJIAN BULAN MAC 2010FIZIK TINGKATAN 4ANSWERS 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 mb) 56 MJ = 56 000 000 J or 5.6 x 107 Jc) 9.8 mg = 0.000 0098 kg or 9.8 x 10-6 kgd) 77 µs = 77 000 000 s or 7.7 x 10-5 se) 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

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3 a) 20 m, b) displacement, c) goes up/ increase, second d) 30 m, right.

4 v = u + atv = 2 + (0.25 x 52)v = 15 m s-1

5 v2 = u2 + 2as0 = (15)2+ 2(-5 )ss = 225/ 10s = 22.5 m, 22.5 m < 25 mSince 22.5 m < 25 m, so the lorry can come to a complete stop before the stop line.

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