Fuchun Prelim P2

CANDIDATE NAME CLASS CENTRE NUMBER S INDEX NUMBER PHYSICS Paper 2 Structured and Free Response 6091/02 26 August 2024 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 on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, 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 in 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 Paper 1 Paper 2 Section A Paper 2 Section B Total /120 Name of setter: Mrs Koh-Teh Yi Wen This document consists of 20 pages. FUCHUN SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS

2 Section A [70 marks] Answer all questions. 1 Fig. 1.1 below shows a dripping tap and measuring cylinder. All the water droplets have the same volume. The droplets fall from the tap at equal time intervals. Fig. 1.1 (a) Explain how the Fig. 1.1 above shows that the water droplets are accelerating. ………………………………………………………………………………………… ……………………………………………………………………………………… [1] (b) A student uses a stopwatch to measure the time taken for the tap to produce 200 droplets. Fig. 1.2 below shows the time reading on the stopwatch. Fig. 1.2 (i) Determine the time, in seconds, for the tap to produce 200 droplets. time = …………………………….. [1]

3 (ii) Determine the average time interval between each droplet when they are falling. time interval = …………………………….. [1] (iii) If the distance between A and B is 20 cm, calculate the average speed of the water droplets. average speed = …………………………….. [2] [Total: 5] 2 Fig 2.1 shows a car test just before impact. Fig 2.2 shows the car at rest after collision. Fig. 2.1 Fig. 2.2 The car crashes into the wall at a speed of 60 km/h. The total mass of the car and the dummy driver is 1500 kg. (a) Calculate the kinetic energy store of the car just before the impact. kinetic energy = …………………………….. [2]

4 (b) Work is done by a force acting on the car at the point of collision to slow it down. Assuming no energy is lost to the surroundings, calculate the average force acting on the car during the collision. average force = …………………