NYGH Prelim 2024 P2 sharing

南洋女子中学校 NANYANG GIRLS' HIGH SCHOOL Preliminary Examination 2024 Secondary Four 'O' Level CANDIDATE NAME CENTRE NUMBER S INDEX NUMBER PHYSICS 6091/02 Paper 2 26 Aug 2024, Monday 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. 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. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE ON ANY BARCODES. 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. The number of marks is given in brackets [ ] at the end of each question or part question Examiner’s Use Paper 1 Section A 1 2 3 4 5 6 7 8 9 10 11 12 Section B 13 14 Total 120 % Setter: This document consists of 22 printed pages and 2 blank pages. [Turn over

2 Section A (70 marks) Answer all questions in this section. 1 Fig. 1.1 shows a toy water rocket. Fig. 1.1 The rocket is half-filled with water and connected by rubber tubing to a pump. (a) Explain, in terms of particles, how air molecules inside the rocket create a pressure on the walls of the rocket. ....................................................................................................................................... ....................................................................................................................................... ....................................................................................................................................... .................................................................................................................................. [2]

3 [Turn over (b) The rocket is placed on a launch platform. Air is then pumped into the rocket so that the pressure of the air inside the rocket increases. The rocket takes off vertically. Fig. 1.2 shows the rocket’s motion in the first 2.0 s. Air resistance is ignored. Fig. 1.2 (i) Determine the maximum height rocket risen by the rocket. height = …………………………….[2] (ii) Complete the velocity time graph in Fig. 1.2 until the rocket hits the ground at t = 4.5 s. [1] (iii) Determine the height of the launch platform. height = …………………………….[1] vel