Yuan Ching Prelim P2

YUAN CHING SECONDARY SCHOOL Secondary Four Express Course Preliminary Examination 2024 CANDIDATE NAME CLASS INDEX NUMBER PHYSICS Paper 2 Theory Candidates answer on the Question Paper. No Additional Materials are required. 6091/02 10 September 2024 1 hour 45 minutes READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A (70 marks) Answer all questions. Section B (10 marks) Answer one out questions. 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. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A Section B Total This paper consists of 19 printed pages. The total number of marks for this paper is 80.

2 Section A (70 marks) Answer all questions. 1 A stone falls from the top of a cliff into the sea, as shown in Fig. 1.1. The speed-time graph for the stone is shown in Fig. 1.2. Fig. 1.1 Fig. 1.2 (a) Describe the speed of the stone from A to B. ……………………………………………………………………………………………… ………………………………………………………………………………………...… [1] (b) Explain, in terms of the forces acting on the stone, why (i) there is a sudden decrease in the speed of the stone from B to C, ……………………………………………………………………………………… ……………………………………………………………………………………… ..………………………………………………………………………………… [2] (ii) the speed of the stone is constant from D to E. ……………………………………………………………………………………… ……………………………………………………………………………………… ..………………………………………………………………………………… [2] speed / ms-1 time / s D E cliff falling stone sea A 0 0 B C

3 2 Fig. 2.1 shows a pendulum of weight 5.0 N suspended from point P. A horizontal force F pulls on the string to the right such that the string is at rest 40° to the vertical. Fig. 2.1 Using scaled vector diagram in the space below, determine the magnitude of the horizontal force F. scale: …………………………… magnitude of F: ……………………….. [4] P 40  F

4 3 Fig. 3.1 shows a large container ship travelling at a constant speed of 9.5 m/s in a straight line. Fig. 3.1 (a) The total resistive for