OPSS 4NA Prelim Paper 1

ORCHID PARK SECONDARY SCHOOL Preliminary Examination 2022 CANDIDATE NAME CLASS INDEX NUMBER PHYSICS Paper 1 Multiple Choice Secondary 4 Normal (Academic) Setter: Ms Isa Tan 5105/01 11 August 2022 Paper 1 and 2: 1 h 15 min Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name and index number on the Optical Answer Sheet in the spaces provided. There are twenty questions in this section. 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. 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. This document consists of 8 printed pages. [Turn over

2 1 Which is not an SI unit? A m B s C C D °C 2 A 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 23.8 s B 24.9 s C 33.0 s D 33.3 s 3 The graph shows how the distance of a car changes with time. Which statement about the speed of the car is correct? A The speed decreases then remains constant. B The speed decreases throughout the journey. C The speed increases then remains constant. D The speed increases throughout the journey. second second distance time

3 [Turn over 4 An object is falling freely in a vacuum near to the Earth’s surface. Which word describes the acceleration of the object? A constant B increasing C decreasing D zero 5 An elephant of weight 50 000 N stands on four legs. Each leg has an area of contact of 0.25 m2. What is the pressure exerted by the elephant on the ground? A 5 kPa B 20 kPa C 50 kPa D 200 kPa 6 Which row in the table is correct? mass weight A a force a force B a force not a force C not a force a force D not a force not a force 7 A uniform bar is pivoted at its centre as shown. What force F is needed to balance the bar? A 3 N B 4 N C 6 N D 8 N F 3 m 4 m 6 N

4 8 The diagram shows a man in a small boat. Why does the boat become less stable when the man stands up? A The centre of gravity of the man and boat is higher. B The centre of gravity of