Beatty 2026 Physics P2 QP

BEATTY SECONDARY SCHOOL PRELIMINARY EXAMINATION 2026 SECONDARY FOUR EXPRESS / G3 CANDIDATE NAME CLASS REGISTER NUMBER PHYSICS 6091/02 Paper 2 Theory 20 Aug 2026 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and register number on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. For Examiner’s Use A 70 B 10 Total 80 The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 20 printed pages. [Turn over

2 Section A Answer all the questions in this section. 1 A monorail undergoing some tests takes 10 minutes to travel along a straight and horizontal path to its destination. Fig. 1.1 shows the velocity-time graph of the monorail. Fig. 1.1 (a) Calculate the acceleration of the monorail in the first 2 minutes. Give your answer in m/s2. acceleration = ………………….. m/s2 [2] (b) Describe the motion of the monorail between time = 7 to 8 mins. ………………………………………………………………………………………………. ………………………………………………………………………………………………. ………………………………………………………………………………………………. …………………………………………………………………………………………… [2] velocity / ms-1 time / min

3 (c) Calculate the displacement of the monorail at time = 10 mins. displacement = …………………... [2] (d) In the space provided, sketch the displacement-time graph of the monorail during the 10 minutes of testing. Indicate all relevant time values on the graph. [2] [Total: 8]

4 2 Fig.2.1 shows a student abseiling on a vertical wall. Fig. 2.1 The weight W of the student is 620 N. The rope, of negligible weight, is attached to the student and to a fixed point P where it makes an angle of 24° to the vertical wall. The reaction force F acts at right angle to the wall. The student is at equilibrium. (a) In the space provided, draw a labelled vector diagram to determine the magnitudes of tension T in the rope and the reaction force F. State clearly the scale you have used. T = ………………; F = ……………… [1] scale = …………………………. [1] (b) Reaction force F forms a pair of action -reaction forces. Identify another action - reaction pair experienced by the student on Fig. 2.1. …………………………………………….………………………………………………… ……………………………………………….…………………………...……………... [1] F T P W 24°

5 (c) As the student descends, the angle which the rope makes with the vertical wall decreases. Describe how the magnitudes of the tension T and force F will change. ………………………………………………………………………………………………. …………………………………………………………………………………………… [1] [Total: 4] 3 Fig. 3.1 shows a typical hydraulic jack used to lift lorry tyres at an automobile workshop. An oil reservoir that is open to the atmosphere is connected to the hydraulic jack. Fig. 3.1 To lift a lorry tyre resting on piston B, a mechanic closes the release valve and presses on the handle to push down piston A. The cross -sectional areas of pistons A and B are 0.080 m2 and 0.960 m2 respectively. Take g to be 10 N/kg. (a) If the lorry tyre has a weight of 75 kg, (i) calculate the pressure exerted on the oil in the hydraulic jack, pressure in oil = ………………… [2] handle oil reservoir valve A valve B oil piston A piston B lorry tyre release valve 10 cm 60 cm pivot force

6 (ii) calculate the minimum force needed to press down the handle so that the lorry tyre is lifted. minimum force = ………………….. [2] (b) When the handle is pressed, valve A closes while valve B opens. This enables oil to flow from piston A to piston B. Using your understanding of the kinetic particle model of matter, explain why the oil flows from piston A to piston B without any loss of pressure. ………………….……………………………………….…………………………………... …………………………..…………………………………………………………………... ………………….……………………………………….…………………………………... …………………………..…………………………………………………………………... ………………………………………...…………………………………………………. [3] (c) State and explain what will happen if the release valve breaks and oil can flow freely through the release valve. ………………………………………………………………………………………………. ………………………………………………………………………………………………. ………………………………………………………………………………………………. …………………………………………………………………………………………… [2] [Total: 9]

7 4 A curved glass tube is open at one end and sealed at the other. A dense liquid is poured into the tube. The liquid traps air in the sealed end. Fig. 4.1 shows the tube, the liquid and the trapped air. Fig. 4.1 (a) The difference between the liquid levels is h. At room temperature, h is 0.480 m. The atmospheric pressure is 1.01 × 105 Pa and the gravitational field strength g is 10 N/kg. The density of the liquid is 1.30 g/cm3. (i) Convert 1.3 g/cm3 into kg/m3. 1.3 g/cm3 = …………………. kg/m3 [1] (ii) Calculate the pressure of the trapped air. pressure = ……………… [2] (b) The glass tube is then brought into a cold room at atmospheric pressure. (i) Describe how energy is conducted thermally through the glass until the liquid is at thermal equilibrium with the cold air. ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………………………………………………………………..……… [2] h x

8 (ii) The original height of the trapped air is x. State how x will change when the glass tube is placed in the cold room. Explain your answer in terms of molecules. ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………………………………………………………………..……… [2] (iii) Explain how h will be affected when the glass tube is placed in the cold room. ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………………………………………………………………..……… [2] [Total: 9] 5 A small pebble of mass m is dropped from the top of a cliff of height 380 m. The pebble has a speed v just before it hits the bottom of the cliff. Assume negligible air resistance. (a) (i) State the Principle of Conservation of Energy. ……………………………………………………………………………………….. ……………………………………………………………………………………….. ………………………………………………………………………………….… [1] (ii) Explain how the Principle of Conservation of Energy is demonstrated in the dropping of the pebble just before it hits the bottom of the cliff. ……………………………………………………………………………………….. ……………………………………………………………………………………….. ……………………………………………………………………………………….. ……………………………………………………………………………………….. ……………………………………………………………………………………….. ………………………………………………………………………………….… [3]

9 (b) Calculate v, the speed of the pebble just before it hits the bottom of the cliff. v = ………………….. [2] (c) When the same pebble is dropped from the top of another cliff, it has a speed of ½ v just as it hits the bottom of the cliff. Suggest one change that could have caused the speed to be halved. Support your claim by showing all your workings and/or graphs. ……………………………………………………………………………………………….