NHHS_2024_sec4_phy_prelim_P1

[Turn over] Name: _____________________________________ ( ) Class : Sec 4 / ( ) Subject : Physics Paper : 6091/1 Level : Secondary Four Date : 28 August 2024 Duration : 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the separate 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 and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer sheet. INFORMATION FOR CANDIDATES 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 16 printed pages. NAN HUA HIGH SCHOOL PRELIMINARY EXAMINATION 2024

Nan Hua High School Preliminary Examination 2024 Physics 6091/1 Page 2 of 16 1 The diagram shows a simple pendulum Using a stopwatch, which would be the most accurate way to measure the period of the pendulum? A time the motion from P to Q to R and back P B time the motion from P to Q to R and back to P again for 20 cycles and multiply by 20 C time the motion from P to Q to R and back to P again for 20 cycles and divide by 20 D time the motion from P to Q and multiply by 4 2 The diagram shows the graph of velocity against time for an object moving in a straight line. Which of the following is the corresponding graph of displacement against time? A B C D P Q R time velocity 0 0

Nan Hua High School Preliminary Examination 2024 Physics 6091/1 Page 3 of 16 3 A sandbag is projected vertically upwards. The diagram shows how its velocity v changes with time t. The upward direction is taken as positive. Which of the following statement is correct? A the time t1 is 0.90 s B the displacement of the sandbag at t = t1 is 8.1 m C the acceleration of the sandbag at t = t1 is 0 m s−2 D the velocity of the sandbag is decreasing at a decreasing rate 4 Two blocks A and B are placed side by side on a smooth horizontal ground. A horizontal force of 20 N is applied on block A as shown in the diagram. Blocks A and B have mass of 3 kg and 5 kg respectively. Which following statement is correct? A The force exerted on A by B is smaller than the force exerted on B by A. B The force exerted on A by B is the same as the force exerted on B by A. C The force exerted on A by