ACS BR Sc Physics (2024 Prelims_ Paper 2 QP + AK)

PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS SCIENCE (PHYSICS) 5086 PAPER 2 TIME: 1 HOUR 15 MINUTES READ THESE INSTRUCTIONS FIRST Write your name, class and index number at the top of this page. You may use an HB 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 only one question. Write your answers in the spaces provided on the question paper. 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 question paper consists of 17 printed pages. For Examiner’s Use Section A /55 Section B /10 Name: __________________________ Class: ___________ Class Index No: __________

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 2 Secondary 4 Express Science (Physics) 5086 Section A Answer all questions in the spaces provided. 1 Physical quantities, consisting of base and derived quantities, are used in science for measuring the world around us. Complete Table 1.1 to show the type of physical quantity, and its SI unit symbol . The first one has been done for you. Table 1.1 physical quantity type of physical quantity SI unit symbol speed derived m/s time base K volume m3 [2] 2 In Australia, “swinging the billy tea” is a tradition where tea is brewed in a teapot and swung in a circular direction three times before drinking. Fig. 2.1 shows an Australian cowboy carrying this out. Fig. 2.1 Explain why the teapot accelerates continuously even though it is moving at constant speed. ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ………………………………………………………………………………………………………….. [2] teapot

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 3 Secondary 4 Express Science (Physics) 5086 3 Fig. 3.1 shows a space capsule of mass 300 kg, a height of 7 m and base area of 3 m2. The space capsule returns to Earth and experiences the Earth’s gravitational field. Fig. 3.1 (a) State what is meant by a gravitational field. ……………………………………………………………………………………………………….. ………………………………………………………………………………………………….… [1] (b) The space capsule finally lands safely on soft marshy ground. The gravitational field strength is 10 N/kg. Calculate the (i) weight of the space capsule, weight = ………………………. N [1] (ii) pressure the space capsule