2024 CCHM Physics 6091 P2 (QP)

[Turn over Name: Class: Class Register Number: PRELIMINARY EXAMINATION 2024 SECONDARY 4 PHYSICS 6091/02 Paper 2 Theory 23 August 2024 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 clearly in the spaces provided at the top of this page. 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 workings 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 /70 Section B /10 Total / 80 This document consists of 22 printed pages.

2 2024 Preliminary Exam/CCHMS/Secondary 4/Physics/6091/02 Section A Answer all questions. 1 An aircraft pulls a glider along a runway as shown in Fig. 1.1. Fig.1.1 Fig. 1.2 shows the speed of the glider during the first 12 s of the motion. Fig. 1.2 (a) Describe the motion of the glider, in terms of acceleration, in the first 12 s. ……...…….….……………………………………………………………………………………… ……...…….….……………………………………………………………………………………… ……...……..…………………………………………………………………………………….. [2]

3 [Turn over 2024 Preliminary Exam/CCHMS/Secondary 4/Physics/6091/02 (b) In the first 6.0 s of the motion, there is a resultant force of 1880 N on the glider. Using the increase in speed in the first 6.0 s, calculate the mass of the glider. mass = ……………………………………………… [2] (c) Determine the distance travelled by the glider in the first 9.0 s of its motion. distance = ……………………………………………… [2] (d) The glider has no engine and stays in the air with the use of convection currents. (i) State what is meant by a ‘convection current’. ……..………………………………………………………………………………………… .…….….………………………………………………………………………………….. [1] (ii) Suggest how the convection currents that support the glider are formed. .……..………………………………………………………………………………………… .…….….………………………………………………………………………………….. [1] [Total: 8]

4 2024 Preliminary Exam/CCHMS/Secondary 4/Physics/6091/02 2 A plane, irregular lamina has a mass of 40 g. It hangs from a nail that passes through a small hole H near to the edge of the lamina. The nail acts as a pivot and the lamina can swing about it. The lamina is held in the position shown in Fig. 2.1, a small