2024 SCGS 4 IP PHYSICS P1

SINGAPORE CHINESE GIRLS’ SCHOOL END-OF-YEAR EXAMINATION 2024 YEAR FOUR INTEGRATED PROGRAMME PHYSICS PAPER 1 Multiple Choice Wednesday 9 October 2024 1 Hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Question Paper and Answer Sheet in the spaces provided. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C, 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. Take g = 10 ms-2 or 10 Nkg-1 unless specified otherwise This question paper consists of 24 printed pages CANDIDATE NAME CLASS REGISTER NUMBER

2 1 Which pair consists of both vector quantities? A Force and power B Pressure and volume C Acceleration and weight D Density and kinetic energy 2 Four rectangular blocks, T, U, V and W are shown. Each block is labelled with its dimensions and mass. Which two blocks have the same density? A U and V B V and W C T and U D T and V

3 3 Forces of 40 N and 25 N act on an object in the directions shown. Which arrow shows the direction of the resultant force on the object?

4 4 A ball is dropped from the top of a ladder. It falls vertically through air and rebounds in a vertical path upon hitting the ground. Assuming that no energy is lost during its impact with the ground and that air resistance is negligible, which velocity-time graph best describes the motion of the ball? A B C D v / m / s t / s v / m / s t / s v / m / s t / s v / m / s t / s

5 5 A brick, initially at rest, falls from a height of h and took 2.0 s to reach the ground. The acceleration of free fall, g = 10 m/s2 . What is the height h of the brick? A 10 m B 20 m C 30 m D 40 m 6 A car is initially travelling along a straight path at 5.0 m/s. It then accelerates at 2.0 m/s2 for 10 s. What is the final speed of the car? A 5.0 m/s B 10 m/s C 20 m/s D 25 m/s

6 7 A 10 kg mass is initially at rest on a rough horizontal surface. A horizontal force is then applied to it and the force applied varies according to the diagram shown. Given that the frictional force acting on the mass when it is moving is 1 N, what is the acceleration of the mass between 15 s to 25 s? A 0 m/s2 B 0.1 m/s2 C 0.4 m/s2 D 0.6 m/s2 8 Which situation(s) correctly describe(s) an action-reaction pair? I Both forces act at the same time. II Both forces act on the same body. III Both forces act in different directions. IV Both forces have the same magnitude. A I only B II and III only C I, III and IV only D I, II, III and IV

7 9 The figure shows two trainee divers diving from the same height into a pool. Assuming that the air resistance is negligible, which physical quantity is different between the divers just before they hit the water? A Velocity B Acceleration C Energy in kinetic store D Distance travelled 10 A toy car was pushed steadily from rest to reach a speed of 5.0 m/s in 10 s. During this time, there was an average air resistance of 3.0 N acting on the car. Calculate the average rate of work done against air resistance. A 7.5 W B 15 W C 75 W D 150 W 30 kg 50 kg

8 11 A weightlifter picks up a stone ball and places it on a shelf. Each lift takes the same time. Which situation requires the greatest power? 12 Electrical energy may be obtained from nuclear fission. In which order is the energy transferred in this process? A nuclear fuel → generator → reactor and boiler → turbines B nuclear fuel → generator → turbines → reactor and boiler C nuclear fuel → reactor and boiler → generator → turbines D nuclear fuel → reactor and boiler → turbines → generator

9 13 The diagram shows a uniform beam 100 cm long. The diagram is not drawn to scale. The beam remains balanced on a pivot at the 50 cm mark under the action of the forces of 4.0 N, 5.0N and 6.0 N. The 4.0 N force is at the 20 cm mark and the 6.0 N force is at the 60 cm mark. At which point on the beam is the 5.0 N force acting? A at the 62 cm mark B at the 74 cm mark C at the 86 cm mark D at the 88 cm mark 14 The diagram shows two identical bars of negligible weight. All the forces acting on each bar are marked. Which bars are in equilibrium? A bar 1 and bar 2 B bar 1 only C bar 2 only D neither bar 1 nor bar 2

10 15 Four identical submarines P , Q, R and S are lowered from one depth to another in water of a constant density. The initial and final depths of each submarine are shown in the diagram. Which row is correct for the difference in pressure from the initial to final depth of each submarine? least change in pressure greatest change in pressure A submarines P and Q submarines R and S B submarines P and Q submarine R only C submarine P only submarines R and S D submarine P only submarine R only