Woodgrove 4NA Physics Paper 1

Name Index Number Class N LEVEL PRELIMINARY EXAMINATION 2022 LEVEL & STREAM : Secondary 4 Normal (Academic) SUBJECT (CODE) : Science (Physics) (5105) PAPER NO : 1 DATE (DAY) : 16 August 2022 (Tuesday) DURATION : 1 hr 15 mins (Paper 1 and Paper 2) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number and on the Answer Sheet in the spaces provided. There are twenty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Answers to Paper 1 and Paper 2 must be handed in separately. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. 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. Any rough working should be done in this paper. The use of an approved scientific calculator is expected, where appropriate. For Examiner’s Use Total /20 This document consists of 7 printed pages including this cover page Setter : Mr Phillip Tan

2 1 A digital stopwatch is used to time a race. The diagrams show the stopwatch at the start and at the end of the race. start end How long did the race take? A 41.5 seconds B 42.0 seconds C 42.5 seconds D 43.0 seconds 2 A body near to the surface of the Earth is falling freely in a vacuum. Which word describes the acceleration of the body? A increasing B deceasing C constant D zero 3 An object of mass 5 kg has three forces acting on it as shown. Find the acceleration of the object. A 12 m / s2 to the left B 9 m / s2 to the right C 3 m / s2 to the left D 3 m / s2 to the right

3 4 Which property of a body describes the resistance to any change of motion? A inertia B balance C force D weight 5 A solid metal cube is melted into two identical spheres. Which statement about the densities of the cube and sphere is correct. A The density of the cube is more than twice the density of the sphere. B The density of the cube is exactly twice the density of the sphere. C The density of the cube is halved the density of the sphere. D The density of the cube is equal to the density of the sphere. 6 A uniform bar is pivoted at its centre. What force F is needed to balance the bar? A 5.0 N B 10.0 N C 20.0 N D 30.0 N 7 An empty glass placed on a sloping surface as shown. The glass remains stable. Where is its centre of gravity?

4 8 The diagram below shows a single brick and a stack of bricks