U61M - M34 - Maths
Transcript of U61M - M34 - Maths
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Year 13 A-Level Mathematics
Mock Applied Paper 48 Marks
1 Hour
January 2019
1
U61M
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Figure 1
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Given that angle BAC = ����DQG�DQJOH�ABC = ����
�D� FDOFXODWH�WKH�DUHD�RI�WKH�ODZQ�WR���VLJQLILFDQW�ILJXUHV�(4)
�E� :K\�LV�\RXU�DQVZHU�XQOLNHO\�WR�EH�DFFXUDWH�WR�WKH�QHDUHVW�VTXDUH�PHWUH"(1)
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1. The Venn diagram shows the probabilities of students’ lunch boxes containing a drink, sandwiches and a chocolate bar.
2
a PCSnd o
b PC c ICSnd Pf Cn Sadp Srd
0.270.27 0.33 o
0.45 Estimate forboxescontainingChoc
80 0.45 36
cP Dlc 1 P Dnc
P c
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Figure 1
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�D� FDOFXODWH�WKH�DUHD�RI�WKH�ODZQ�WR���VLJQLILFDQW�ILJXUHV�(4)
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Question 1 continued
(Total for Question 1 is 11 marks)
3
14 0.27 1 V c15 0.271 Viv
S and C independent so
P Src PCs Pcc
0.27 0.6 x Vtu 0.27
0.27 Vtv 0.270.6
0.45 0.27 Vtu
0.18 Vtu 2
Sub for Vtu in C 14 0.27 TV15 0.27 0.18
14 0.27 TV15 0.45
14 0.45 0.27 V15
0.15
From 2 U 0.18 VU 0.18 0.15u e 0.03
w I 0.6 Vtu I 0.6 0.18 0.22
U 50.03 V 0.15 W 0.22
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Question 4 continued
The equation of the regression line of r on h for these 10 days is r = í12.8 + 0.15h
(d) Give an interpretation of the gradient of this regression line.(1)
(e) (i) Comment on the suitability of Sara’s sampling method for this study.
(ii) Suggest how Sara could make better use of the large data set for her study.(2)
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(Total for Question 4 is 7 marks)
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2. The lifetimes of batteries sold by company X are normally distributed, with mean 150 hours and standard deviation 25 hours.
4
M TZa X N 150,252 P X 160 0.34458 bycalc
Expected number lasting more than160hours
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9. A (2.5kg)
Figure 2
B (1.5 kg)
1m
P
A small ball A of mass 2.5kg is held at rest on a rough horizontal table.
The ball is attached to one end of a string.
The string passes over a pulley P which is fixed at the edge of the table. The other end of the string is attached to a small ball B of mass 1.5kg hanging freely, vertically below P and with B at a height of 1m above the horizontal floor.
The system is release from rest, with the string taut, as shown in Figure 2.
The resistance to the motion of A from the rough table is modelled as having constant magnitude 12.7N. Ball B reaches the floor before ball A reaches the pulley.
The balls are modelled as particles, the string is modelled as being light and inextensible, the pulley is modelled as being small and smooth and the acceleration due to gravity, g, is modelled as being 9.8ms–2.
(a) (i) Write down an equation of motion for A.
(ii) Write down an equation of motion for B.(4)
(b) Hence find the acceleration of B.(2)
(c) Using the model, find the time it takes, from release, for B to reach the floor.(2)
(d) Suggest two improvements that could be made in the model.(2)
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(Total for Question 2 is ! marks)
5
c Recommend company7
Standard deviations are similar but 7
batteries have a greater mean life than
batteries
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SECTION B: MECHANICS
Answer ALL questions. Write your answers in the spaces provided.
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Question 6 continued
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(Total for Question 6 is 4 marks)
64
(�)
Unless otherwise indicated, whenever a numerical value of g is required, take g = 9.8�m�s–2�
and give your answer to either 2 significant figures or 3 significant figures.
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3. A particle, P, moves with constant acceleration (i – 2j) m s-2.
6
I I It t ta EZ
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ts TH fi thatf a s Eg yuh
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13.1 1 1I 3 I 4J ms
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SECTION B: MECHANICS
Answer ALL questions. Write your answers in the spaces provided.
Unless otherwise indicated, whenever a numerical value of g is required, take g = 9.8 m s–2
and give your answer to either 2 significant figures or 3 significant figures.
6.v
U
O T t
Figure 1
A car moves along a straight horizontal road. At time t = 0, the velocity of the car is U m s–1. The car then accelerates with constant acceleration a m s–2 for T seconds. The car travels a distance D metres during these T seconds.
Figure 1 shows the velocity-time graph for the motion of the car for 0 - t - T.
Using the graph, show that D = UT + ½ aT 2.
(No credit will be given for answers which use any of the kinematics (suvat) formulae listed under Mechanics in the AS Mathematics section of the formulae booklet.)
(4)
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65
Question 3 continued
(Total for Question 3 is 4 marks)
7
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4.
Figure 3
A beam AB has weight W newtons and length 4 m. The beam is held in equilibrium in a horizontal position by two vertical ropes attached to the beam. One rope is attached to A and the other rope is attached to the point C on the beam, where AC = d metres, as shown in Figure 3. The beam is modelled as a uniform rod and the ropes as light inextensible strings. The tension in the rope attached at C is double the tension in the rope attached at A.
(a) Find the value of d.(6)
A small load of weight kW newtons is attached to the beam at B. The beam remains in equilibrium in a horizontal position. The load is modelled as a particle. The tension in the rope attached at C is now four times the tension in the rope attached at A.
(b) Find the value of k.(6)
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A BC
d m
4 m
PMT
NTA n 2TA
Zinw
a I 3Ta W Ta W3
MomaboutA W x 2 2Ta xd
2W 2W d3
d 3 m
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8. A bird leaves its nest at time t = 0 for a short flight along a straight line.
The bird then returns to its nest.
The bird is modelled as a particle moving in a straight horizontal line.
The distance, s metres, of the bird from its nest at time t seconds is given by
s = 110
(t 4 – 20t3 + 100t2), where 0 - t - 10
(a) Explain the restriction, 0 - t - 10(3)
(b) Find the distance of the bird from the nest when the bird first comes to instantaneous rest.
(6)
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69
Question 4 continued
(Total for Question 4 is 11 marks)
9
b NTA n 4Ta
W kW
I 5TA W Ith
Ta W Ifk5
Moments about A Wx2 t KW 4 4 Tax 3
2W 1 4kW 4W Ifk 35
Wf2 4k W x 12 Itt5
5 2t4k 12 Itt
10 t 20K 12 t 12k
8K Z
K4
12
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Question 9 continued
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Turn over 70
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5.
10
oto
Isms i
a Use 45cos10 Uy 45sin10
Horizontal motion time to reach net t 12456510
E s 0.2707804
Vertical motion y yo ut taty 3.5 455in10 0.2707804 4 9 0.27078042
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9. A (2.5kg)
Figure 2
B (1.5 kg)
1m
P
A small ball A of mass 2.5kg is held at rest on a rough horizontal table.
The ball is attached to one end of a string.
The string passes over a pulley P which is fixed at the edge of the table. The other end of the string is attached to a small ball B of mass 1.5kg hanging freely, vertically below P and with B at a height of 1m above the horizontal floor.
The system is release from rest, with the string taut, as shown in Figure 2.
The resistance to the motion of A from the rough table is modelled as having constant magnitude 12.7N. Ball B reaches the floor before ball A reaches the pulley.
The balls are modelled as particles, the string is modelled as being light and inextensible, the pulley is modelled as being small and smooth and the acceleration due to gravity, g, is modelled as being 9.8ms–2.
(a) (i) Write down an equation of motion for A.
(ii) Write down an equation of motion for B.(4)
(b) Hence find the acceleration of B.(2)
(c) Using the model, find the time it takes, from release, for B to reach the floor.(2)
(d) Suggest two improvements that could be made in the model.(2)
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Turn over 71
Question 5 continued
11
y 1.0248 m
so 2.5cm above net to 2 S f
Ib Va Ux 45 cos10 44.3163 hrs
y Uy at 455inlo 9.8 0 2707804
10.4678 ms
Speed 44.31637C10.46787
45.5358I46ms to 2 S.f
C air resistance size of ball spin on ball
![Page 12: U61M - M34 - Maths](https://reader031.fdocuments.in/reader031/viewer/2022012500/6178fa99497b1420323bd058/html5/thumbnails/12.jpg)
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Question 9 continued
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73
Question 5 continued
(Total for Question 5 is 14 marks)
TOTAL FOR PAPER IS 48 MARKS
12