AES 2025 Physics Prelim P2 QP

Name: ....................................................... ( ) This Question Paper consists of 18 printed pages including this page. [Turn over ASSUMPTION ENGLISH SCHOOL PRELIMINARY EXAMINATION 2025 PHYSICS 6091 / 02 ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL LEVEL: Sec 4 Express DATE: 2 September 2025 CLASS: Sec 4/1 DURATION: 1 hour 45 minutes Additional Materials provided: - INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your NAME and INDEX NUMBER at the top of this page. SECTION A (70 marks) STRUCTURED QUESTIONS Answer all questions. Write your answers in the spaces provided on the question paper. SECTION B (10 marks) FREE-RESPONSE QUESTIONS Answer one question. Write your answers in the spaces provided on the question paper. For Examiner’s Use Paper 1 40 Paper 2 Section A 70 Paper 2 Section B 10 Paper 3 40 Total % 100 At the end of the examination, hand in this question booklet.

2 6091/4E/PRELIM/25 SECTION B – STRUCTURED QUESTIONS (70 marks) Answer all the questions in the spaces provided. 1 Fig. 1.1 shows the displacement -time graph of a ball falling in the air . The acceleration due to free fall is 10 m/s2. Fig. 1.1 (a) Using Fig. 1.1, describe how the graph shows the velocity of the falling ball is changing in the first 1.2 s. …………………………………………………………………………………… …………………………………………………………………………………… [1] (b) Determine the terminal velocity of the ball. terminal velocity = ……………… [2] (c) Explain, in terms of forces, how the ball reaches terminal velocity as it falls from rest. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] displacement / m time / s 0 10 20 30 40 50 60 0.4 0.8 1.2 1.6 2.0 2.4

3 6091/4E/PRELIM/25 [Turn Over 2 A man is pushing a heavy box along a flat ground with a constant force F. A frictional force, f acts in a horizontal direction. (a) Initially, the forces on the box are balanced and the box is stationary. (i) State what is meant by balanced forces. …………………………………………………………………………….. …………………………………………………………………………….. [1] (ii) Describe one other possible state of motion of the box when the forces acting on it are balanced. …………………………………………………………………………….. …………………………………………………………………………….. [1] (b) The man stops pushing the box after some time. Explain what happens to the motion of the box. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] (c) The weight of the box exerts a downward force on the ground. This is one force in an action-reaction pair. Describe the other force in the pair. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] F f

4 6091/4E/PRELIM/25 3 The figure shows the top view of a small ship of mass 1.2 × 106 kg. The ship is moving sideways at a speed of 0.040 m/s as it comes to a rest at a dock. (a) Calculate the energy in the kinetic store of the ship when it is approaching the wall. energy = ……………… [2] (b) The ship hits three wooden pillars when it approaches the wall. The ship is in contact with the pillars for 0.60 s before it comes to rest. (i) Show that the average force exerted on the side of the ship is 80 kN. [3] (ii) Calculate the distance moved by the wooden pillars when they are hit by the ship. distance = ……………… [2] large wooden pillars small ship 0.040 m/s dock

5 6091/4E/PRELIM/25 [Turn Over 4 A beaker of water is placed in a freezer. The beaker contains 250 g of water initially at 30 °C. The maximum rate at which energy is transferred away from the water by the freezer is 100 J/s. It is known that t he specific heat capacity of water is 4.2 J/g°C and specific latent heat of fusion of water is 334 J/g. (a) Explain what is meant by the specific heat capacity of water is 4.2 J/g°C. …………………………………………………………………………………… …………………………………………………………………………………… [1] (b) Calculate the amount of energy released when the water is cooled from 30 °C to 0 °C. energy released = ……………… [2] (c) Calculate the mass of ice produced if the beaker of water at 0 °C is kept in the freezer for the next 10 minutes. mass = ……………… [2] freezer water in a beaker

6 6091/4E/PRELIM/25 5 Water waves are moving towards the seashore. Fig. 5.1 shows the top view of the wavefronts at a particular instant. Fig. 5.2 shows the displacement-time graph of a particle at point M. Fig. 5.2 (a) (i) Describe how wavefront can be used to obtain wavelength. …………………………………………………………………………….. …………………………………………………………………………….. [1] (ii) Calculate the wavelength of the water wave when it is far from the shore. wavelength = ……………… [1] (iii) Determine speed of the water wave when it is far from the shore. speed = ……………… [2] far away from shore near to shore 7.6 m ● M ● N Fig. 5.1 (not drawn to scale) displacement / m 4.0 8.0 time / s 0.30 0 -0.30

7 6091/4E/PRELIM/25 [Turn Over (b) Explain why the particle at point N has a shorter wavelength compared to the particle at point M. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] 6 A light positively charged metal sphere P is suspended by a plastic thread near an uncharged metal sphere Q, which is supported on an insulated stand , as shown in the figure. (a) Explain why sphere P is attracted to sphere Q. You may draw charges on sphere Q in the figure above. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] (b) Sphere Q is moved towards the left until it contacts sphere P. Describe and explain what happens to sphere P. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] P Q

8 6091/4E/PRELIM/25 7 A 9.0 Ω light bulb is connected to a 22 V battery. When the switch is closed, the ammeter reading is 2.0 A. (a) Calculate the potential difference across the light bulb. potential difference = ……………… [2] (b) Calculate the current in the 3.0 Ω resistor. current = ……………… [2] (c) The switch is now open. Explain how the brightness of the light bulb will change. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] A V 22 V 3.0 Ω

9 6091/4E/PRELIM/25 [Turn Over 8 In the figure, a paper cone is attached to a magnet. The magnet is placed near end X of a