EJC 2021 J1 H2 Promo P4 Sample

©EJC 2021 9749/04/J1H2PROMO/2021 [Turn over EUNOIA JUNIOR COLLEGE JC1 PROMOTIONAL EXAMINATIONS 2021 General Certificate of Education Advanced Level Higher 2 CANDIDATE NAME CIVICS GROUP 2 1 - REGISTRATION NUMBER PHYSICS Paper 4 Practical 9749/04 September 2021 1 hour 30 minutes Candidates answer on the Question Paper. Additional Materials: As listed in the Confidential Instructions READ THESE INSTRUCTIONS FIRST Write your name, civics group and registration number in the spaces at the top of this page. 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 marks 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. This document consists of 11 printed pages and 1 blank page. Shift Laboratory For Examiner’s Use 1 12 2 21 Total 33

2 ©EJC 2021 9749/04/J1H2PROMO/2021 1 In this experiment, you will investigate the motion of a marble along an incline. (a) Draw a 45° line in the lower left corner of the graph paper. (b) Secure the graph paper to the wooden board using adhesive putty. Incline the wooden board at an angle θ of about 10°. Use additional adhesive putty to secure the position of the wooden board on the benchtop. Keep the wooden board at the same angle of incline throughout the experiment, as shown in Fig. 1.1. Without using a protractor, determine the angle θ in your set up. Present your method clearly. You may wish to include a diagram. θ = …………………………………. [2] Fig. 1.1 45° 10° side view benchtop 10° wooden board stack of three wooden blocks graph paper side view benchtop wooden board 3.1 cm 17.6 cm • Clear method; measurements of lengths leading to correct use of trigonometry functions • Value of θ within range with appropriate unit • Accept 2 – 3 s.f. 10°

3 ©EJC 2021 9749/04/J1H2PROMO/2021 [Turn over (c) Fold the cardboard to form a track that has a V-shape cross-section. Mark the cardboard track at distances d of 30 mm and 120 mm from one end as shown in Fig. 1.2. (d) Support the unmarked end of the track at about 7 cm above the benchtop using the retort stand, boss and clamp. Position the marked end of the track on the graph paper such that the axis of the track is aligned to the 45° line, as shown in Fig. 1.3. Where appropriate,