2024 PGSS Physics Prelim P2

EXP PUNGGOL SECONDARY SCHOOL SECONDARY 4 EXPRESS 2024 PRELIMINARY EXAMINATION QUESTION BOOKLET NAME CLASS INDEX NUMBER Physics Paper 2 6091/02 22 August 2024 1 hour 45 minutes READ THESE INSTRUCTIONS FIRST Write your class, register number and name on all the work you hand in. You may use a soft pencil for any diagrams, graphs, tables or rough working. Write in dark blue or black pen. Do not use staples, paper clips, glue or correction fluid. 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. Section A Answer all questions. Write your answers in the spaces provided on the question paper. Section B Answer one question. Write your answers in the spaces provided on the question paper. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s use Parent’s Signature Section A /70 Section B /10 Total /80 This paper consists of 22 printed pages and 0 blank page.

2 Section A Answer all the questions in the spaces provided. 1 Fig. 2.1 shows how the velocity of a vehicle changes with time. Fig. 1.1 (a) Describe how the displacement of t he vehicle changes from t = 0 s to t = 80 s. ………………………………..…………………………………………………... ………………………………..…………………………………………………... ………………………………..…………………………………………………... ……………………………………………………………………………… [2] (b) Calculate the average velocity for the whole journey. average velocity = ……………….… [3] (c) Calculate the deceleration of the vehicle at t = 204 s. deceleration = ……………………… [2] [total: 7] 30 25 20 15 10 5 0 20 40 60 80 100 120 140 160 180 200 220 velocity m/s time / s

3 2 Fig. 2.1 shows an aircraft dropping a crate of supplies to a region that is difficult to reach by land vehicles. Fig. 2.1 At a certain instant in the crate’s descent, it experiences a total resistive force of 1200 N. The total weight of the crate and its contents, including the parachute, is 2500 N. (a) Draw and label the forces acting on the crate shown in Fig. 2.1 at this instant. [1] (b) Calculate the total mass of the crate and its contents. The gravitational field strength is 10 N / kg. mass = ………………….. [1] crate

4 (c) Calculate the acceleration of the crate at the instant shown in Fig. 2.1. acceleration = ……………………… [3] (d) Suggest one factor that could affect the air resistance acting on the crate. ……………………………………………………………………………... [1] (e) As the crate continues descending, it eventually a