2024 NYJC H1 PHY 8867 P2

NYJC 2024 8867/02/J2Prelim/24 [Turn over NANYANG JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION Higher 1 CANDIDATE NAME CLASS TUTOR’S NAME CENTRE NUMBER S INDEX NUMBER PHYSICS 8867/02 Paper 2 Structured Questions 10 September 2024 2 hours Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and tutor’s name in the spaces at the top of this page. Write in dark blue or black pen on both sides of the paper. You may use a HB pencil for any diagrams, graphs. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Section A Answer all questions. Section B Answer any one question. 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. For Examiner’s Use Section A 1 / 9 2 /10 3 /10 4 /17 5 /14 Section B 6 /20 7 /20 Total /80 This document consists of 23 printed pages.

2 NYJC 2024 8867/02/J2Prelim/24 Data speed of light in free space c  3.00  108 m s−1 elementary charge e  1.60  10−19 C unified atomic mass constant u  1.66  10−27 kg rest mass of electron me  9.11  10−31 kg rest mass of proton mp  1.67  10−27 kg the Avogadro constant NA  6.02  1023 mol−1 gravitational constant G  6.67  10−11 N m2 kg−2 acceleration of free fall g  9.81 m s−2 Formulae uniformly accelerated motion s  21 2ut at v2  u2  2as resistors in series R  R1  R2  … resistors in parallel 1/R  1/R1  1/R2  …

3 NYJC 2024 8867/02/J2Prelim/24 [Turn over Section A Answer all questions. 1 (a) State what is meant by the term accuracy. [1] (b) A trampoline consists of a central section supported by springy material. At t = 0, a girl starts to fall vertically onto a trampoline as shown in Fig 1.1. The girl hits the trampoline and rebounds vertically. The variation with time t of the velocity v of the girl is shown in Fig 1.2. Fig. 1.2 Fig 1.1 springy material girl t / s v / m s1 rebound time

4 NYJC 2024 8867/02/J2Prelim/24 (i) For the motion between t = 0 to t = 0.90 s, 1. Calculate the acceleration. acceleration = m s2 [2] 2. The values obtain ed from both axes ha ve an absolute uncertainty of half of the smallest division. Determine the absolute uncertainty of the value in (b)(i)(1). absolute uncertainty = m s2 [2] 3. Using your answers in parts (a) and (b)(i)(2), comment on the accuracy of of the value in (b)(i)(1). [1] (c) Using Fig 1.2, estimate the maximum compression o