CEDAR 2025 PHY PRELIM P2 QP

1 CEDAR GIRLS’ SECONDARY SCHOOL PRELIMINARY EXAMINATION 2025 SECONDARY FOUR CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/02 Paper 2 Structured and Free Response 28 August 2025 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and index number. Write in dark blue or black pen. You may use a soft pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A 1 / 7 2 / 6 3 / 7 4 / 5 5 / 7 6 / 7 7 / 7 8 / 4 9 / 10 10 / 10 Section B 11 / 10 12 / 10 Deduction Total / 80 This document consists of 24 printed pages.

2 Section A Answer all the questions in this section. 1 The resistive forces that act backwards on a car are air resistance and friction, as shown in Fig. 1.1. Fig. 1.1 Fig. 1.2 shows a graph of total resistive force that acts on the car against time t. t / s Fig. 1.2 The car is at rest at t = 0. The forward driving force acting on the car is zero until t = 1.0 s. From t = 1.0 s until t = 12 s, the forward driving force has a constant value of 2400 N. (a) (i) State the two time intervals when the resultant force acting on the car is zero. .................................................................................................................................... [1] (ii) Describe the motion of the car during these two intervals. ......................................................................................................................................... …………………………………………………………………………………………………… ………………………………………………………………………………………………... [2] air resistance friction forward driving force 0 1 2 3 4 5 6 7 8 9 10 11 12 3000 2000 1000 0 total resistive force / N 0

3 (b) The car has a mass of 800 kg. (i) Calculate the acceleration of the car at t = 3.0 s. acceleration = …………….………….. [2]