2024 TKGS P1 PRELIM QP

This document consists of 19 printed pages and 1 blank page. TANJONG KATONG GIRLS’ SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR EXPRESS CANDIDATE NAME CLASS 4 INDEX NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 20 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Write your name, class and index number on the OMR Answer sheet. There are forty questions in 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. Take the value of gravitational field strength on Earth, g, to be 10 N / kg unless otherwise stated. The use of an approved scientific calculator is expected, where appropriate. Setter : Mr Aloysius Goh Markers : Mr Aloysius Goh, Ms Sultana, Mr David Chung, Mr Timothy Yeo

2 Tanjong Katong Girls’ School Sec 4 Preliminary Examination Section A [40 marks] Answer ALL the questions in this section. 1 What is the approximate mass of an apple? A 8 g B 80 g C 800 g D 8000 g 2 Which of the following is equivalent to 1.8 g/cm3? A 1.8 kg/m3 B 18 kg/m3 C 180 kg/m3 D 1800 kg/m3 3 Forces P and Q act at a point O as shown in the diagram, the angle between their lines of action is varied from 30° to 150°. If R is their resultant force, which of the following is correct? A R is always greater in magnitude than either P or Q. B R is always smaller in magnitude than either P or Q. C R is never in the same direction as either P or Q. D The magnitude of R can be equal to the sum of the magnitudes of P and Q.

3 Tanjong Katong Girls’ School Sec 4 Preliminary Examination 4 A ball is dropped from the top of a 125 m tall building. What is the time it takes to fall to the ground? Take g to be 10 m/s2. A 0.325 s B 1.25 s C 5.00 s D 10.00 s 5 The velocity time graph of a tennis ball that is dropped from the top of a building is shown below. Which of the following statements best explains the motion of the ball? A The air resistance acting on the tennis ball decreases as the tennis ball falls, causing it to accelerate. B The air resistance acting on the tennis ball decreases as the tennis ball falls, causing it to decelerate. C The air resistance acting on the tennis ball increases as the tennis ball decelerates. D The air resistance acting on the tennis ball increases as the velocity increases until the air resistance is equal to the weight of the tennis ball.

4 Tanjong Katong Girls’ School Sec 4 Preliminary Examination 6 A heavy ball hanging from a cable is held in equilibrium by a chain. Which vector diagram shows the three forces acting on the ball? A B C D

5 Tanjong Katong Girls’ School Sec 4 Preliminary Examination 7 P, Q and R are three blocks resting on a rough surface. A force of 90 N is applied at one end as shown in the diagram below. The masses of P, Q and R are 1 kg, 2 kg and 3 kg respectively and the frictional forces with the floor are 10 N, 20 N and 30 N respectively. What are the tensions T1, between blocks P and Q, and T2, between blocks Q and R, in the strings? T1 T2 A B C D 5 N 15 N 15 N 30 N 10 N 30 N 45 N 30 N 8 The diagram shows a pail containing approximately equal amount of water and sand. X and Z are the centre of gravity of the sand and water respectively More sand is added to the pail. This affects the position of the centre of gravity of the pail and its contents, and the stability of the pail. Which of the following shows how the position of the centre of gravity of the pail and its contents, and the stability of the pail will be affected? centre of gravity stability A B C D moves from X towards Y moves from X towards Y moves from Y towards Z moves from Y towards Z decreases increases decreases increases

6 Tanjong Katong Girls’ School Sec 4 Preliminary Examination 9 A baseball bat is leaning against the wall as shown below. The mass of the baseball bat is 570 g, and the frictional force on the bat by the wall is 0.50 N. What is the normal reaction force? A 0.84 N B 1.1 N C 32 N D 42 N 10 Three liquids are poured into beakers as shown. Which statement about the densities of the liquids is correct? A Liquid 1 has twice the density of liquid 3. B Liquid 3 has twice the density of liquid 1. C The liquids all have different densities. D The liquids all have the same density.

7 Tanjong Katong Girls’ School Sec 4 Preliminary Examination 11 The diagram below shows a water manometer used to measure the pressure inside a gas pipe. The density of water is 1000 kg m-3 and gravitational field strength is 10 N kg-1. Find the pressure of the gas supply in Pa. A 380 Pa B 380 Pa above atmospheric pressure C 520 Pa D 520 Pa above atmospheric pressure 12 The diagram shows a hydraulic pump. Which of the following comparison is true? A The force F is the same as the weight of the load. B The force F is greater than the weight of the load. C The pressure on piston P is the same as the pressure on piston Q. D The pressure on piston P is smaller than the pressure on piston Q. scale in mm gas pipe water

8 Tanjong Katong Girls’ School Sec 4 Preliminary Examination 13 A boy climbs slowly at a steady speed to the top of a small hill. What is the main energy transfer taking place for the boy as he climbs? A internal store to kinetic store B chemical potential store to kinetic store C kinetic store to gravitational potential store D chemical potential store to gr