Serangoon_Gardens_2022 4N_Phy_Prelim_P2_QP

SERANGOON GARDEN SECONDARY SCHOOL PRELIMINARY EXAMINATION CANDIDATE NAME CLASS INDEX NUMBER SCIENCE(PHYSICS) 5105/02 5 August 2022 Secondary 4 Normal(Academic) Papers 1 and 2: 1 hour 15 minutes 1100 - 1215 No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class register number and class on the Answer Sheet in the spaces provided unless this has been done for you. Answer all questions in Section A and any two questions in Section B. The use of an approved scientific calculator is expected, where appropriate. In calculations, you should show all the steps in your working, giving your answer at each stage. You are advised to spend no more than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. At the end of the examination hand in your answers to Paper 1 and Paper 2 separately. The number of marks given in brackets [ ] at the end of each question of part question. For Examiner’s Use A 14 B 16 Total 30 This question paper consists of 11 printed pages and 1 blank page.

2 SGS/2022/Prelim/4NA/Science(Physics)/P2 BLANK PAGE

3 SGS/2022/Prelim/4NA/Science(Physics)/P2 [Turn Over Section A Answer all the questions in the spaces provided. 1 A student does some running exercises. The diagram below shows the speed-time graph for one exercise. (a) Determine the speed of the student: (i) when the time is 2.5 s speed = ............................................... m/s [1] (ii) when the student is moving with a constant speed. speed = ............................................... m/s [1] (b) Describe how the speed of student changes in section CD. ................................................................................................................................... [1] (c) Determine the distance travelled by the student in section AB. distance travelled = ............................................... m [2]

4 SGS/2022/Prelim/4NA/Science(Physics)/P2 2 In countries with winters that have heavy snowfall, a thin layer of ice often forms on the roads. For safety, drivers are required to put on snow chains onto their tires. An example of this is shown in the following diagram. Explain how the snow chains help prevent the tires from slipping when travelling over the thin layers of ice on the roads. ................................................................................................................................................. .................................................................................................................................................