2020 ASRJC H1 Physics Prelims P2 Questions

1 8867/02/ASRJC/2020Prelim [Turn Over Name: _____________________________ ( ) Class: 20 / ______ 2020 JC2 Preliminary Examination PHYSICS Higher 1 8867/02 Paper 2 Structured Questions Thursday 17 September 2020 2 hours Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class index number and class in the spaces provided above. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. The use of an approved scientific calculator is expected, where appropriate. Section A Answer all questions. Section B Answer all questions. 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 document consists of 19 printed pages and 1 blank page. For Examiner’s Use Paper 1 (30 marks) Paper 2 (80 marks) 1 /10 2 / 8 3 / 5 4 / 7 5 /14 6 /16 7 /20 deductions Paper 2 Total (80 m) ANDERSON SERANGOON JUNIOR COLLEGE

2 8867/02/ASRJC/2020Prelim 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 at 2 v2 = u2 + 2as resistors in series, R = R1 + R2 + … resistors in parallel, 1/R = 1/R1 + 1/R2 + …

3 8867/02/ASRJC/2020Prelim [Turn Over Section A Answer all the questions in this section. 1 (a) A marble is projected up a smooth ramp with an initial speed of 2.0 m s−1. The ramp makes an angle of 30° with the ground and the height of the ramp is 0.13 m as shown in Fig. 1.1. Fig. 1.1 (not to scale) The marble then leaves the ramp and first hits the ground at a distance d from the edge of the ramp. (i) By using energy consideration or otherwise, show that the speed of the marble when it reaches the top of the ramp is 1.2 m s−1. [2] (ii) Hence, calculate the distance d. d = ……………………………. m [2] 0.13 m 2.0 m s−1 ramp ground marble path of marble d 30°

4 8867/02/ASRJC/2020Prelim (b) Along a horizontal frictionless surfac