2024 Crescent Merged

This paper consists of 18 printed pages (including cover page). READ THESE INSTRUCTIONS FIRST Write your name, index number and class in the spaces provided at the top of this page and on the optical answer sheet. Do not use staples, paper clips, highlighters, 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 optical 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. CRESCENT GIRLS’ SCHOOL SECONDARY FOUR PRELIMINARY EXAMINATION PHYSICS 6091/01 Paper 1 28 August 2024 1 Hour Class: Register No: Name:

2 24/S4/6091  Crescent Prelim 1 What is the typical diameter of a basketball? A 24 μm B 24 mm C 24 cm D 24 dm 2 The diagram shows the resultant R of a 3.0 N force and a 4.0 N force that acts at a point P. The angle between the 3.0 N force and the 4.0 N force can be any value from 0 o to 90 o . Which value of R is not possible? A 4.0 N B 5.0 N C 6.0 N D 7.0 N 3 The speed-time graph shows the motion of an object. How far does the object travel when it is moving at constant speed? A 25 m B 50 m C 75 m D 88 m

3 24/S4/6091  Crescent Prelim 4 The graph shows how the speed of an object varies with time. At which labelled time is the acceleration the greatest? 5 When a man is standing in an ascending lift, the magnitude of the force exerted on the man’s feet by the lift floor is always equal to the magnitude of _________________ . A his weight B the tension in the cable supporting the lift C what it will be when the lift is stationary D the force exerted on the lift floor by his feet 6 A student releases a tennis ball from a tall building. What happens to the velocity and to the acceleration of the ball during the first few seconds after release? velocity acceleration A decreases decreases B decreases increases C increases decreases D increases increases

4 24/S4/6091  Crescent Prelim 7 A uniform beam is pivoted at its centre. Two weights are placed on the beam in the positions shown and the beam is balanced by an upward force F. What is the size of F? A 6 N B 12 N C 30 N D 60 N 8 When a car turns a corner at speed, it risks toppling over. Two factors affecting the stability of a car are the height of its centre of mass and the distance between its front wheels. Which factors make the car most stable? centre of mass distance between front wheels A high small B high large C low small D low large 9 The diagram shows a simple model of the braking system of a car. A force of 20 N is applied to piston P. As a result, there is a force F on piston Q.