CAT HIGH 2025 PHY PRELIM P1 QP

Name: Index Number: Class: CATHOLIC HIGH SCHOOL Preliminary Examination Secondary 4 (O-Level Programme) PHYSICS 6091/01 Paper 1 Multiple Choice 3 September 2025 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use paper clips, glue or correction fluid. Write your name, index number and class on this paper and on the Answer Sheet in the spaces provided. There are forty 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. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. For examiner’s use only: Total / 40 Overall Marks % Paper 1 40 30% Paper 2A 70 50% Paper 2B 10 Paper 3 40 20% This document consists of 16 printed pages.

2 1 A student wishes to measure directly the circumference of a football. Which is the most suitable instrument to use? A a digital caliper B a measuring tape C a micrometer D a ruler 2 Which vector diagram correctly shows the force Z as the resultant of forces X and Y? 3 An object is dropped from a great height so that air resistance becomes significant. Which graph shows how its acceleration varies with time?

3 4 A speed-time graph for the journey of a car is shown. What is the distance-time graph for the journey? 5 A train is travelling horizontally in a straight line. A book is on a table in the train. The diagram shows all the forces acting on the book. How is the train moving? A accelerating to the left of the diagram. B accelerating to the right of the diagram. C moving at uniform speed to the left of the diagram. D moving at uniform speed to the right of the diagram.

4 6 A parachutist jumps off a plane. After 1.0 min, he opens the parachute and his velocity decreases at a decreasing rate. The following statements are possible explanations why the velocity of the parachutist decreases at a decreasing rate. (I) As the velocity decreases, the air resistance acting on the parachute decreases. (II) The air resistance is larger than the weight of the parachutist. (III) The force of the parachute acting on the air increases. Which of the above statements are correct explanations? A (I) only B (I) and (II) only C (II) only D (III) only 7 A thin, irregularly shaped metal plate is freely suspended from a point P and is in equilbrium, as shown. Point Q is vertically below P. Where is the centre of gravity of the plate located? A It is at P. B I