PHS_2022_Prelims_4N_ScPhy_P2_QP

Name: ...................................... Register/Index Number: ............... Class: .............. PRESBYTERIAN HIGH SCHOOL SCIENCE (PHYSICS) 5105/02 PAPER 2 26 July 2022 Monday 1 hour 15 minutes Papers 1 and 2 PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL 2022 SECONDARY FOUR NORMAL (ACADEMIC) PRELIMINARY EXAMINATION INSTRUCTIONS TO CANDIDATES Write your class, register number and name on all the work you hand in. Write in dark blue or black pen. Do not use correction fluid. Section A Answer all questions. Write your answers in the spaces provided on the question paper. Section B Answer any two questions. Write your answers in the spaces provided on the question paper. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A 14 Section B 16 Total 30

2 [Turn over Setter: Mr Edmund Choo Vetted by: Mr Sherman See This question paper consists of 12 printed pages. Section A Answer all the questions in the spaces provided. 1 Fig. 1.1 shows a child on a swing. The child starts from X, swings to Y, to Z and then back to Y and to X again. Fig. 1.1 (a) At which point of the swing is the speed maximum? speed = ……………….. m / s [1] Fig. 1.2 shows how the speed of a child, playing on a swing, changes with time. X Z Y 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.1 0.2 0.3 0.4 0.5 0.6 speed m/s time / s

3 [Turn over Fig. 1.2 (b) What is the maximum speed of the child? speed = ……………….. m / s [1] (c) Describe the motion of the child from (i) t = 0.0 s to t = 0.1 s ………………………………………………………………………………………………………………………………………………………………………. [1] (ii) and from t = 0.2 s to t = 0.3 s. ………………………………………………………………………………………………………………………………………………………………………. [1] 2 A cup made from plastic, containing a hot drink, is shown in Fig. 2.1. Fig. 2.1 (a) State two ways how energy is transferred from the hot drink to the surrounding. ………………………………………………………………………………………..…………………………………………………………………………………………..…

4 [Turn over …………………………………………………………………………………………..……………………………………………………………………………………….. [2] (b) Explain how the plastic material used for the cup helps to reduce the energy transfer to the surrounding. ………………………………………………………………………………………….……………………………………………………………………………………….. [1]

5 [Turn over (c) Suggest one modification to the cup so that th