2024 DHS Prelim H1 Phy P2

1 © DHS 2024 8867/02 [Turn over Name: Centre/Index Number: Class: DUNMAN HIGH SCHOOL Preliminary Examination Year 6 H1 PHYSICS Paper 2 Structured Questions Candidates answer on the Question Paper 8867/02 12 September 2024 2 hours READ THESE INSTRUCTIONS FIRST Write your class, index number and name at the top of this page 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 in the spaces provided on the question paper. Section B Answer any one question in the spaces provided 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. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A 1 10 2 8 3 19 4 12 5 11 Section B (circle attempted) 6 / 7 20 s.f. -1 Total 80 This document consists of 20 printed pages

2 © DHS 2024 8867/02 [Turn over 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 = ut + 1 2 at2 v2 = u2 + 2as resistors in series, R = R1 + R2 + . . . resistors in parallel, 1/R = 1/R1 + 1/R2 + . . .

3 © DHS 2024 8867/02 [Turn over Section A Answer all the questions in the spaces provided. 1 Student X attempts to determine the acceleration of free fall g experimentally by determining the time taken t for a small metal ball to free fall through a vertical distance s from rest in vacuum. The data obtained by the student are as follows. t = (860 ± 10) ms s = (359 ± 1) cm (a) Define acceleration. …………………………………………………………………………………………… …………………………………………………………………………………………… [1] (b) (i) Calculate the magnitude of the g obtained by the student. g = …………………………………. m s-1 [2] (ii) Express g with its associated uncertainty. g = ………………… ± ………………. m s-1 [3]

4 © DHS 2024 8867/02 [Turn over (iii) Another student Y uses the same method as student X to determine g but in the presence of significant air resistance. State and explain how student Y’s calculated value of g calculated will differ from the value of g obtained by student X. …………………………………………………………………………………….. …………………………………………………………………………………….. [2]