Bukit Merah Prelim P1

Class Index Number Name BUKIT MERAH SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS PHYSICS 6091/01 Paper 1 16 August 2024 1 hour Candidates answer on the Multiple Choice Answer Sheet. Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work you hand in. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. 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. 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 question paper. The use of an approved scientific calculator is expected, where appropriate. This document consists of 18 printed pages. Setter: Mrs Goh SM [Turn over

2 BMSS/2024/4E/PRELIM/6091/01 [Turn over 1 The S.I. unit of potential difference is the volt. Which of the following correctly expresses the volt in base units? A kg m2A s3 B kg2 m2A s2 C kg mA s3 D kg m2A 3 The diagram shows two forces acting on a small sphere. The angle between the two forces is more than 90o. Which is a possible resultant force acting on the small sphere? A 3 N B 11 N C 17 N D 21 N 2 The graph shows how the displacement of a particle changes with time. Which row shows the section(s) of the graph where the particle is undergoing acceleration and deceleration? acceleration deceleration A B C D P, Q P, Q P, T P, Q, S R R, S Q R, T displacement time 0 P Q R S T 12 N 9 N

3 BMSS/2024/4E/PRELIM/6091/01 [Turn over 4 The graph below shows the force acting on a 1 kg block of wood which is originally moving at 6 m/s on a table. If the table has a friction of 2 N, what is the velocity-time graph of the wood?

4 BMSS/2024/4E/PRELIM/6091/01 [Turn over 5 Two students are in a lift that is travelling downwards with a deceleration of 0.40 m/s2 The total weight of the two students and the lift is 4000 N. The gravitational field strength on Earth is 10 N/kg. What is the tension in the lift cable? A 160 N B 3840 N C 4000 N D 4160 N 6 An object is brought to planet P from planet Q. The gravitational field strength on the surface of planet P is twice that on the surface of planet Q. No air resistance acts on the object at planets P and Q. Which statement is incorrect? A The object’s acceleration during free fall on planet P is twice of that on planet Q. B The object’s energy in the gravitational potential store on planet P is twice of that on planet Q when the object is placed at the same height above ground. C The object on planet P would have more reluctance to move from its original stationary position as compared to on planet Q. D The object on planet P would need twice the force to be lifted as compared to on planet Q. 7 A stoppered thin-walled bottle of mass 30 g and volume 120 cm3 is partly filled with 50 g of fine powder M. What is the maximum mass of powder M which may be added into the bottle so that the bottle floats freely in a liquid of density 1.2 g/cm3? A 40 g B 60 g C 64 g D 94 g lift cable lift

5 BMSS/2024/4E/PRELIM/6091/01 [Turn over 8 The diagram shows the dimensions of a chair. A boy sits on the chair and exerts a 600 N force on it. The diagram also shows the position of the centre of gravity of the chair. The mass of the chair is 5.0 kg. The gravitational field strength is 10 N/kg. What is the magnitude of the horizontal force, F, needed to overturn the chair with the boy sitting on it? A 150 N B 165 N C 240 N D 258 N 9 The diagram shows the position of the centre of gravity of a spoon made of different materials for parts S and Q. Which statement is incorrect? A The clockwise moment due to the weight of Q about the centre of gravity is equal to the anticlockwise moment due to the weight of S. B The material used to make part S is denser than the material used to make part Q. C The spoon can be balanced by placing a knife-edge at the centre of gravity. D The weight of part Q of the spoon is equal to the weight of part S. 10 A parachutist opens his parachute and falls to Earth at constant speed. What is the principal energy transfer taking place as he falls? A kinetic store to gravitational potential store B kinetic store to internal store of energy C gravitational potential store to kinetic store of energy D gravitational potential store to internal store of energy

6 BMSS/2024/4E/PRELIM/6091/01 [Turn over 11 A skier is pulled up a short straight slope at constant speed by a rope. The tension in the rope is 100 N and there is combined frictional and air resistance force of 20 N acting on the skier. The slope is 10 m long and the skier rises 1.5 m vertically. How much work is done by the rope pulling the skier up the slope? A 120 J B 150 J C 1000 J D 1200 J 12 A gas is heated in a vessel shown below. The piston is moveable. The following quantities are given. I the average speed of the gas molecules II the average frequency of collisions between the gas molecules and the walls of the vessel III the average distance between the molecules Which quantity/quantities will increase when the gas is heated? A I only B I and II only C I and III only D I, II and III moveable piston gas

7 BMSS/2024/4E/PRELIM/6091/01 [Turn over 13 The diagram shows the brake system of a car. The pipes are filled with an incompressible liquid. When a force is applied to the brake pedal, the pressure in the liquid increases and applies a force to each of the four wheels. The area of the piston connected to the brake pedal is 8 cm2. The area of each piston connected to the brakes is 12 cm2. A force of 800 N is applied by the foot to the brake pedal. What is the force applied to each brake? A 300 N B 530 N C 1200 N D 4800 N 14 The diagram shows a mercury barometer on a day when the atmospheric pressure is 75 cm Hg. At which position is the pressure 15 cm below atmospheric pressure? 100 C B A 90 80 70 60 50 40 30 20 10 0 cm D

8 BMSS/2024/4E/PRELIM/6091/01 [Turn over 15 A tall plastic can contains water at room temperature. The can is placed on top of a big block of ice. What is the main method that cools the water at the top of the can? A conduction B conduction and convection C convection D convection and radiation 16 The diagram shows two c