PLMGSS_2022_4NA_ScPhy Prelim P2

[Turn Over CANDIDATE NAME CLASS . INDEX NUMBER SCIENCE (Physics) 5105/02 Paper 2 Physics 3 August 2022 (Taken together with Paper 1) 1 hour 15 minutes Candidates answer on the Question Paper. No additional materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and index number on the front cover. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Section A (14 marks) Answer all questions. Write your answers in the spaces provided on the question paper. Section B (16 marks) Answer any two questions. Write your answers in the spaces provided on the question paper. Enter the question number in Section B that you have answered on the lines in the grid below. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Only Paper Number Marks Paper 1 / 20 Paper 2 Section A / 14 Paper 2 Section B / 16 Q _____ Q _____ Total / 50 This document consists of 11 printed pages (including this cover page). Paya Lebar Methodist Girls’ School (Secondary) Preliminary Examination 2022 Secondary 4 Normal Academic

2 [Turn Over SECTION A (14 marks) Answer all questions in this section. 1. The following graph shows the motion of two cyclists. (a) State which cyclist, A or B, slows down faster. ……………………….. [1] (b) Calculate the acceleration of cyclist B. acceleration = …………………… m/s2 [2] B A

3 [Turn Over 2. Three blocks, A, B and C are placed on three inclined planes as shown. A B C (a) Mark an ‘X’ at the pivoting point of block B. [1] (b) State which block(s), A, B or C will not topple. Explain your answer. ………………………………………………………………………………………….. ……………………………………………………………………………………… [2] 3. A battery is connected to two identical light bulbs, P and Q and a resistor R as shown in the diagram below. (a) Define e.m.f. ………………………………………………………………………………………….. ……………………………………………………………………………………… [1] (b) The current in light bulb P is 0.15 A. Calculate the current in resistor R. Current in resistor R = ……………………. A [2] R P Q

4 [Turn Over 4. The diagram shows a boy and a man standing on skateboards at the top of a track. The total