ASRJC 2024 JC2 H2 Physics Prelim P4 Soln

9749/04/ASRJC/2024/Prelim [Turn Over 1 Name: _____________________________ ( ) Class: 24 /_____ 2024 JC2 Preliminary Examination PHYSICS Higher 2 9749/04 Paper 4 Practical Monday 26 August 2024 2 hours 30 minutes Candidates answer on the Question Paper. Additional Materials: As listed on the Confidential Instructions READ THESE INSTRUCTIONS FIRST Write your name, class index number and class in the spaces provided above. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. Answer all questions. Write your answers in the spaces provided on the question paper. The use of an approved scientific calculator is expected, where appropriate. You may lose mark if you do not show your working or if you do not use appropriate units. Give details of the practical shift and laboratory where appropriate in the boxes provided. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. Shift Laboratory This document consists of 15 printed pages and 1 blank page. For Examiner’s Use Paper 4 (55 marks) 1 2 3 4 Total (55 marks) ANDERSON SERANGOON JUNIOR COLLEGE

9749/04/ASRJC/2024/Prelim 2 1 In this experiment, you will investigate the motion of a sphere launched from a ramp. (a) Set up the apparatus as shown in Fig. 1.1. Adjust the height of the clamp so that the launch angle  is approximately 15°. Do not bend the ramp throughout the experiment. (b) (i) Measure and record , as shown in Fig. 1.1.  = …………….………..……[1] (ii) Measure and record the height h1 of the mark above the bench, as shown in Fig. 1.2. h1 = …………….………..…… For Examiner’s Use Fig. 1.1 (not to scale) 15 M1 0.280 m Fig. 1.2 (not to scale)

9749/04/ASRJC/2024/Prelim [Turn Over 3 (iii) Measure and record the height h2 of the end of the ramp, as shown in Fig. 1.2. h2 = …………….………..……..[1] (iv) Calculate the speed v of the sphere when it leaves the ramp using the expression 122 ( )v g h h=− where g = 9.81 m s−2. v = …………….………..……..[1] (c) Justify the number of significant figures you have given for your value of v. …………………………………………………………………………………………………..…. ……………………………………………………………………………