2022 NYGH Phy Prelims P2

南洋女子中学校 NANYANG GIRLS' HIGH SCHOOL Preliminary Examination 2022 Secondary Four 'O' Level CANDIDATE NAME CENTRE NUMBER S INDEX NUMBER PHYSICS 6091/02 Paper 2 29 Aug 2022, Monday 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, index number and name 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. Sections A and B Answer all questions. Question 13 has a choice of parts to answer. Write your answers in the spaces provided on the Question Paper. Electronic calculators may be used. You are advised to spend no longer than one hour on Section A and no longer than 45 minutes on Section B. At the end of examination fasten all your work securely together. The number of marks is given in the brackets [ ] at the end of each question or part question. Examiner’s Use Paper 1 Section A 1 2 3 4 5 6 7 8 9 10 Section B 11 12 13 Total 120 % Setter: CMH This document consists of 21 printed pages and 3 blank pages. [Turn over

2022 Preliminary Examination Secondary 4 2 Nanyang Girls’ High School Setter: CMH Physics II Section A (50 marks) Write your answers in the spaces provided. 1 A 30 N block is suspended from a ceiling with two cables, C1 and C2, as shown in Fig. 1.1. Fig. 1.1 ( a ) On Fig. 1.1, draw and label the forces acting on the block. [1] ( b ) With the aid of a scale diagram, determine the magnitude of the forces acting along C 1 and C2. magnitude of force along C 1 = magnitude of force along C2 = [3] ceiling 110 °100 ° block C2 C1

2022 Preliminary Examination Secondary 4 3 Nanyang Girls’ High School Setter: CMH Physics II [ Turn over 2 A children’s ride consists of a steel cable running between two posts of different heights as shown in Fig. 2.1. A girl starts the ride from rest at the higher post. Her horizontal motion has an initial uniform acceleration for 3.0 s followed by a constant speed of 2.4 m/s for a further 5.0 s before coming to rest at the lower post after decelerating for the last 1.0 s. ( a ) What does uniform acceleration mean? [1] ( b ) On Fig. 2.2, draw a speed-time graph for the horizontal motion of the girl. [2] ( c ) Calculate (i) the horizontal distance travelled by the girl, horizontal distance = [2] Fig. 2.1 steel cable wheel post speed m/s time s Fig. 2.2 7.0 m 4.0 m

2022 Preliminary Examination Secondary 4 4 Nanyang Girls’ High School Setter: CMH Physics II ( i i ) the average horizontal speed for the whole r