2025 ZHSS Physics Prelim Paper 1 QP

1 [Turn over ZHONGHUA SECONDARY SCHOOL PRELIMINARY EXAMINATION 2025 SECONDARY 4 EXPRESS Candidate’s Name Class Register Number PHYSICS 6091 /01 Paper 1 26 August 2025 1 hour Additional Materials: OTAS READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, index number and class on the OTAS 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 OTAS. Read the instructions on the OTAS 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. This document consists of 22 printed pages.

2 1 Velocity is given by the change in displacement divided by the change in time. How many vector quantities appear in this statement? A 0 B 1 C 2 D 3 2 The velocity-time graph represents a short journey of an object. Which displacement-time graph represents the same journey? A B 3 A man drives from Serangoon to Woodlands. The total distance he travels is 19 km. He started driving from Serangoon for 15 min and rested half an hour at a coffee shop. He then continued driving 20 min before he reached Woodlands. What is the man’s average driving speed? A 0.54 km/h B 18 km/h C 19 km/h D 33 km/h C D

3 [Turn over 4 The table below shows the readings on a car speedometer at every five seconds interval. time / s speed / km/h 0 0 5 10 10 22 15 36 20 54 Which of the following describes the acceleration of the car? A constant B decrease C Increase D zero 5 Forces of 4.0 N and 2.0 N act at a point. Which scale diagram shows the forces that have a resultant of 4.0 N?

4 6 An aeroplane is half way along a runway before it takes off. The arrows show the directions of four forces acting on the aeroplane. The drag forces on the aeroplane are negligible. The gravitational field strength g is 10 N/ kg. The acceleration of the aeroplane is 2.0 m/s2. What is the largest force? A the force on wheels from the ground B the lift acting on the wings C the thrust from the jet engines D the weight of the aeroplane 7 Four solid uniform cones have equal weight. They are placed on a bench as shown in the scale diagram. Which cone is the most stable?

5 [Turn over 8 The stability of a b