Questions — OCR MEI Paper 1 (118 questions)

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OCR MEI Paper 1 Specimen Q2
3 marks Moderate -0.8
2 A geometric series has first term 3. The sum to infinity of the series is 8 .
Find the common ratio.
OCR MEI Paper 1 Specimen Q3
4 marks Easy -1.2
3 Solve the inequality \(| 2 x - 1 | \geq 4\).
OCR MEI Paper 1 Specimen Q4
6 marks Moderate -0.8
4 Differentiate the following.
  1. \(\sqrt { 1 - 3 x ^ { 2 } }\)
  2. \(\frac { x ^ { 2 } } { 3 x + 2 }\)
OCR MEI Paper 1 Specimen Q5
4 marks Moderate -0.3
5 A woman is pulling a loaded sledge along horizontal ground. The only resistance to motion of the sledge is due to friction between it and the ground. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ff44367e-c992-4e79-b255-5a04e0b8e21e-05_314_1024_486_356} \captionsetup{labelformat=empty} \caption{Fig. 5}
\end{figure} At first, she pulls with a force of 100 N inclined at \(32 ^ { \circ }\) to the horizontal, as shown in Fig.5, but the sledge does not move.
  1. Determine the frictional force between the ground and the sledge. Give your answer correct to 3 significant figures.
  2. Next she pulls with a force of 100 N inclined at a smaller angle to the horizontal. The sledge still does not move. Compare the frictional force in this new situation with that in part (a), justifying your answer.
OCR MEI Paper 1 Specimen Q6
4 marks Moderate -0.8
6 Fig. 6 shows a partially completed spreadsheet.
This spreadsheet uses the trapezium rule with four strips to estimate \(\int _ { 0 } ^ { \frac { 1 } { 2 } \pi } \sqrt { 1 + \sin x } \mathrm {~d} x\). \begin{table}[h]
ABCDE
1\(x\)\(\sin x\)\(y\)
200.00000.00001.00000.5000
30.1250.39270.38271.17591.1759
40.250.78540.70711.30661.3066
50.3751.17810.92391.38701.3870
60.51.57081.00001.41420.7071
75.0766
8
\captionsetup{labelformat=empty} \caption{Fig. 6}
\end{table}
  1. Show how the value in cell B3 is calculated.
  2. Show how the values in cells D2 to D6 are used to calculate the value in cell E7.
  3. Complete the calculation to estimate \(\int _ { 0 } ^ { \frac { 1 } { 2 } \pi } \sqrt { 1 + \sin x } \mathrm {~d} x\). Give your answer to 3 significant figures.
OCR MEI Paper 1 Specimen Q7
10 marks Moderate -0.3
7 In this question take \(\boldsymbol { g } = \mathbf { 1 0 }\).
A small stone is projected from a point O with a speed of \(26 \mathrm {~m} \mathrm {~s} ^ { - 1 }\) at an angle \(\theta\) above the horizontal. The initial velocity and part of the path of the stone are shown in Fig. 7.
You are given that \(\sin \theta = \frac { 12 } { 13 }\).
After \(t\) seconds the horizontal displacement of the stone from O is \(x\) metres and the vertical displacement is \(y\) metres. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ff44367e-c992-4e79-b255-5a04e0b8e21e-07_419_479_904_248} \captionsetup{labelformat=empty} \caption{Fig. 7}
\end{figure}
  1. Using the standard model for projectile motion,
    The stone passes through a point A . Point A is 16 m above the level of O .
  2. Find the two possible horizontal distances of A from O . A toy balloon is projected from O with the same initial velocity as the small stone.
  3. Suggest two ways in which the standard model could be adapted.
OCR MEI Paper 1 Specimen Q8
7 marks Standard +0.3
8 Find \(\int x ^ { 2 } \mathrm { e } ^ { 2 x } \mathrm {~d} x\).
OCR MEI Paper 1 Specimen Q9
8 marks Standard +0.3
9 In an experiment, a small box is hit across a floor. After it has been hit, the box slides without rotation. The box passes a point A. The distance the box travels after passing A before coming to rest is \(S\) metres and the time this takes is \(T\) seconds. The only resistance to the box's motion is friction due to the floor. The mass of the box is \(m \mathrm {~kg}\) and the frictional force is a constant \(F\).
    1. Find the equation of motion for the box while it is sliding.
    2. Show that \(S = k T ^ { 2 }\) where \(k = \frac { F } { 2 m }\).
  2. Given that \(k = 1.4\), find the value of the coefficient of friction between the box and the floor.
OCR MEI Paper 1 Specimen Q10
15 marks Standard +0.3
10 In a certain region, the populations of grey squirrels, \(P _ { \mathrm { G } }\) and red squirrels \(P _ { \mathrm { R } }\), at time \(t\) years are modelled by the equations: \(P _ { \mathrm { G } } = 10000 \left( 1 - \mathrm { e } ^ { - k t } \right)\) \(P _ { \mathrm { R } } = 20000 \mathrm { e } ^ { - k t }\) where \(t \geq 0\) and \(k\) is a positive constant.
    1. On the axes in your Printed Answer Book, sketch the graphs of \(P _ { \mathrm { G } }\) and \(P _ { \mathrm { R } }\) on the same axes.
    2. Give the equations of any asymptotes.
  2. What does the model predict about the long term population of
    Grey squirrels and red squirrels compete for food and space. Grey squirrels are larger and more successful than red squirrels.
  3. Comment on the validity of the model given by the equations, giving a reason for your answer.
  4. Show that, according to the model, the rate of decrease of the population of red squirrels is always double the rate of increase of the population of grey squirrels.
  5. When \(t = 3\), the numbers of grey and red squirrels are equal. Find the value of \(k\).
OCR MEI Paper 1 Specimen Q11
9 marks Standard +0.3
11 Fig. 11 shows the curve with parametric equations $$x = 2 \cos \theta , y = \sin \theta , 0 \leq \theta \leq 2 \pi .$$ The point P has parameter \(\frac { 1 } { 4 } \pi\). The tangent at P to the curve meets the axes at A and B . \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ff44367e-c992-4e79-b255-5a04e0b8e21e-10_668_1075_543_255} \captionsetup{labelformat=empty} \caption{Fig. 11}
\end{figure}
  1. Show that the equation of the line AB is \(x + 2 y = 2 \sqrt { 2 }\).
  2. Determine the area of the triangle AOB .
OCR MEI Paper 1 Specimen Q12
9 marks Standard +0.3
12 A model boat has velocity \(\mathbf { v } = ( ( 2 t - 2 ) \mathbf { i } + ( 2 t + 2 ) \mathbf { j } ) \mathrm { m } \mathrm { s } ^ { - 1 }\) for \(t \geq 0\), where \(t\) is the time in seconds. \(\mathbf { i }\) is the unit vector east and \(\mathbf { j }\) is the unit vector north.
When \(t = 3\), the position vector of the boat is \(( 3 \mathbf { i } + 14 \mathbf { j } ) \mathrm { m }\).
  1. Show that the boat is never instantaneously at rest.
  2. Determine any times at which the boat is moving directly northwards.
  3. Determine any times at which the boat is north-east of the origin.
OCR MEI Paper 1 Specimen Q14
9 marks Moderate -0.3
14 Blocks A and B are connected by a light rigid horizontal bar and are sliding on a rough horizontal surface. A light horizontal string exerts a force of 40 N on B .
This situation is shown in Fig. 14, which also shows the direction of motion, the mass of each of the blocks and the resistances to their motion. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ff44367e-c992-4e79-b255-5a04e0b8e21e-11_266_1283_664_255} \captionsetup{labelformat=empty} \caption{Fig. 14}
\end{figure}
  1. Calculate the tension in the bar. The string breaks while the blocks are sliding. The resistances to motion are unchanged.
  2. Determine
OCR MEI Paper 1 Specimen Q15
6 marks Standard +0.3
15 Fig. 15 shows a uniform shelf AB of weight \(W \mathrm {~N}\).
The shelf is 180 cm long and rests on supports at points C and D . Point C is 30 cm from A and point D is 60 cm from B .
side view \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ff44367e-c992-4e79-b255-5a04e0b8e21e-11_284_1169_1987_383} \captionsetup{labelformat=empty} \caption{Fig. 15}
\end{figure} Determine the range of positions a point load of \(3 W\) could be placed on the shelf without the shelf tipping. \section*{Copyright Information:} }{www.ocr.org.uk}) after the live examination series. If OCR has unwittingly failed to correctly acknowledge or clear any third-party content in this assessment material, OCR will be happy to correct its mistake at the earliest possible opportunity. For queries or further information please contact the Copyright Team, The Triangle Building, Shaftesbury Road, Cambridge CB2 8EA.
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OCR MEI Paper 1 2019 June Q1
3 marks Easy -1.2
1 In this question you must show detailed reasoning. Show that \(\int _ { 4 } ^ { 9 } ( 2 x + \sqrt { x } ) \mathrm { d } x = \frac { 233 } { 3 }\).
OCR MEI Paper 1 2023 June Q5
5 marks Standard +0.3
5 In this question you must show detailed reasoning.
  1. Find the coordinates of the two stationary points on the graph of \(y = 15 - x ^ { 2 } - \frac { 16 } { x ^ { 2 } }\).
  2. Show that both these stationary points are maximum points.
OCR MEI Paper 1 2020 November Q7
6 marks Moderate -0.8
7 In this question you must show detailed reasoning. The function \(\mathrm { f } ( x )\) is defined by \(\mathrm { f } ( x ) = x ^ { 3 } + x ^ { 2 } - 8 x - 12\) for all values of \(x\).
  1. Use the factor theorem to show that \(( x + 2 )\) is a factor of \(\mathrm { f } ( x )\).
  2. Solve the equation \(\mathrm { f } ( x ) = 0\).
OCR MEI Paper 1 2020 November Q10
9 marks Standard +0.3
10 In this question you must show detailed reasoning. Fig. 10 shows the curve given parametrically by the equations \(\mathrm { x } = \frac { 1 } { \mathrm { t } ^ { 2 } } , \mathrm { y } = \frac { 1 } { \mathrm { t } ^ { 3 } } - \frac { 1 } { \mathrm { t } }\), for \(t > 0\). \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{7de77679-59c0-4431-a9cb-6ab11d2f9062-07_611_595_708_260} \captionsetup{labelformat=empty} \caption{Fig. 10}
\end{figure}
  1. Show that \(\frac { d y } { d x } = \frac { 3 - t ^ { 2 } } { 2 t }\).
  2. Find the coordinates of the point on the curve at which the tangent to the curve is parallel to the line \(4 \mathrm { y } + \mathrm { x } = 1\).
  3. Find the cartesian equation of the curve. Give your answer in factorised form.
OCR MEI Paper 1 Specimen Q13
4 marks Standard +0.3
13 In this question you must show detailed reasoning. Determine the values of \(k\) for which part of the graph of \(y = x ^ { 2 } - k x + 2 k\) appears below the \(x\)-axis.