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PHYSICS
SECONDARY 3 LEVEL TEST 1
6 Mar 2014 (Thursday) 1 hour CANDIDATE NAME
CLASS INDEX NUMBER
INSTRUCTIONS TO CANDIDATES Do not turn over the page until you
are told to do so. Write your name, class and index number in the
spaces above. Section A Write your name, class, and index number in
the spaces in the boxes provided. There are ten questions in this
section. Answer all questions. For each question there are four
possible answers A, B, C and D. Choose the one you consider correct
and record your choice in boxes provided on page 2. Any rough
working should be done in this question paper. Sections B and C
Answer all the questions. Show all your working and answers in the
spaces provided on the question paper. Express your answers to 3
significant figures. INFORMATION FOR CANDIDATES The number of marks
is given in brackets [ ] at the end of each question or part
question. The total marks for this paper is 45. Approved electronic
calculators are allowed in this paper.
This Paper consists of 12 printed pages including the cover
page.
Section B
Section C
Total
45
For Examiners Use Section A
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Section A: Multiple-choice Questions (10 marks)
Question 1 2 3 4 5 6 7 8 9 10
Answer
1 Which list of SI units contains only base units? A kelvin,
metre, mole, ampere, kilogram B kilogram, metre, second, ohm C
kilogram, newton, metre, ampere, ohm D newton, kelvin, second,
volt, mole
2 In an experiment, the width w and the thickness x of a metre
rule are to be measured as precisely as possible using normal
laboratory apparatus.
Which combination of instruments is most appropriate for
these
measurements?
Measurement of w Measurement of x A half-metre rule half-metre
rule B half-metre rule vernier calipers C vernier calipers
half-metre rule D vernier calipers micrometer screw gauge
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3 A student pulls a piece of tape through a ticker-tape timer.
Every 0.02 s, the timer prints a dot on the tape.
First the tape is pulled quickly, then slowly, then quickly
again.
Which piece of tape does the student obtain?
4 The speed-time graph below shows the movement of a car.
What does the shaded area of the graph represent?
A The average acceleration of the car. B The average speed of
the car. C The total distance travelled by the car. D The total
travelling time of the car.
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5 An aircraft, flying at a constant height, is gaining speed.
The four forces acting are
L lift due to the wings R air resistance T the thrust due to the
engines W the weight
Which of the following statements is correct?
Vertical forces horizontal forces
A L = W T = R B L > W T > R C L = W T > R D L > W T
= R 6 A box of mass 8.0 kg rests on a horizontal, rough surface. A
string attached to
the box passes over a smooth pulley and supports a 2.0 kg mass
at its other
end.
When the box is released, a friction force of 6.0 N acts on it.
What is the
acceleration of the box?
A 1.4 m s-2 B 1.7 m s-2 C 2.0 m s-2 D 2.5 m s-2
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7 The propeller on a boat pushes water backwards with a force of
2000 N. The boat moves through the water against a total resistive
force of 1800 N.
According to Newtons third law, what is the forward force on the
propeller due
to the water?
A 3800 N B 2000 N C 1800 N D 200 N 8 A wooden block is pushed
across a table at constant speed.
Which statement is correct?
. A The frictional force increases as the block moves at
constant speed. B The frictional force is equal and opposite to the
pushing force. C The frictional force is greater than the pushing
force. D The frictional force is less than the pushing force. 9 The
inertia of a body is its resistance to changes in motion. Which
property is a measure of the bodys inertia?
A Its density B The height of its sides C Its mass D The size of
its base
10 An object of mass 100 g is immersed in water in a cylinder.
The water level rises from 50 cm3 to 90 cm3. What is the density of
the material from which the
object is made?
A 0.4 g cm-3 B 1.1 g cm-3 C 0.9 g cm-3 D 2.5 g cm-3
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Section B: Structured Questions (25 marks) Answer all the
questions in the space provided.
1 (a) State the difference between a scalar quantity and a
vector quantity.
.. [1]
(b) When two forces are combined, the size of the resultant
force depends on the angle between the two forces.
A force of 6 N is added to another force of 8 N at right angles
to each
other. Determine the resultant of the two vectors using vector
diagrams.
Scale: 1 cm to 1 N
Resultant magnitude = .
Resultant direction = [3]
[Total: 4 marks]
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2 A micrometer is used to measure the thickness of a sheet of
glass. With the jaws closed and with no glass sheet, the micrometer
reading is shown in Figure 2.1. With the jaws closed around the
glass sheet, the micrometer reading is shown in Figure 2.2.
Figure 2.1 Figure 2.2
(a) State the smallest division of the thimble scale.
.. [1]
(b) State the zero error of the micrometer screw gauge.
.. [1]
(c) State the measurement of the micrometer screw gauge in
Figure 2.2.
.. [1]
(d) State the corrected measurement of the thickness of the
glass.
.. [1]
[Total: 4 marks]
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3 A ball falls vertically, hits a table and rebounds vertically
upwards. Figure 3 shows the velocity-time graph for the ball.
Figure 3
The ball is released at A, hits the floor at B and is in contact
with the floor between B and C. D is the highest point reached as
the ball rises.
(a) Using information from Figure 3, describe the motion of the
ball between A and B.
.. [1]
(b) State how Figure 3 shows that the distance covered between A
and B is larger than the distance covered between C and D.
.. [1]
(c) (i) Determine the change in speed of the ball between B and
C.
[1]
(ii) Determine the change in velocity of the ball between B and
C.
[1]
(iii) Hence, determine the acceleration of the ball between B
and C.
[1]
[Total: 5 marks]
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4 A picture weighing 10.0 N hangs freely by a cord XYZ as shown
in Figure 4.1 below.
Figure 4.1 Figure 4.2
Construct separate free body diagrams for the nail and the frame
separately on
Figure 4.2. [2] Show, using suitable scale diagrams in the space
below, how the tension in the
cord is determined.
Scale: 1 cm to 2 N.
Tension in the cord: N. [3]
[Total: 5 marks]
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5 (a) Define the mass of a body and its weight.
Mass ..
..
Weight ...
......[2]
(b) Figure 5.1 shows a persons weight is 800 N when he is in a
stationary lift. Figure 5.2 shows the person in an ascending lift
travelling with an acceleration of 2 m s-2 upwards.
Figure 5.1 Figure 5.2 Figure 5.3 (i) Draw a free body diagram of
the forces acting on the person in
Figure 5.3 based on the ascending lift scenario. [2] (ii)
Calculate the apparent weight of the person when he is in the
ascending lift.
Apparent weight: [3]
[Total: 7 marks]
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Section C: Long Structured Question (10 marks) Answer the
question in the spaces provided.
6 Figure 6.1 shows a parachutist falling vertically downwards.
Figure 6.2 shows how the speed of the parachutist varies with
time.
Figure 6.1 Figure 6.2
(a) (i) State the name of the downward force on the parachutist
at A.
... [1]
(ii) State the acceleration of the parachutist (with units) at
A.
... [1]
(iii) State the name of one upward force on the parachutist at
B.
... [1]
(iv) Explain why the acceleration decreases from A to B.
.
.
... [2]
(v) Explain why the parachutist falls at a constant speed after
B.
.
... [1]
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(b) At point C, the parachutist deployed his parachute.
(i) Suggest why the parachutist falls at a lower speed after
D.
... [1]
(ii) State the acceleration of the parachutist (with units) at
D.
... [1]
(iii) Sketch the accelerationtime graph of the parachutist
throughout his journey.
[2]
[Total: 10 marks]
THE END