TJC_H1_PHY_P2

TEMASEK JUNIOR COLLEGE 2016 Preliminary Examination Higher 1 CANDIDATE NAME CIVICS GROUP INDEX NUMBER PHYSICS Paper 2 Structured Questions Candidates answer on the Question Paper. No Additional Materials are required. 8866/02 31 August 2016 2 hours READ THESE INSTRUCTION FIRST Write your Civics group, index number and name on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Section A Answer all questions. Section B Answer any two 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. For Examiner’s Use Section A 1 2 3 4 5 Section B 6 7 8 Total This document consists of 24 printed pages.

2 Data speed of light in free space, c = 3.00 × 108 m s1 elementary charge, e = 1.60 × 1019 C the Planck constant, h = 6.63 × 1034 J s 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 acceleration of free fall, g = 9.81 m s2 Formulae uniformly accelerated motion, s = 21 2ut at 2v = 2 2ua s work done on/by a gas, W = p V hydrostatic pressure, p = ρgh resistors in series, R = 12RR   resistors in parallel, 1 R = 1211 RR  

3 Section A Answer all the questions in this section. 1 A bomber, shown in Fig. 1.1, is flying horizontally at a speed of 72 m s -1 and at a height of 100 m above the ground. When directly flying over the origin O, bomb B is released and it strikes a truck T, which is moving along a level road with a constant speed v. At the instant the bomb is released, the truck T is at a distance x o = 125 m from origin O. Fig. 1.1 (a) Define acceleration. [1] (b) Write an expression, in terms of the quantities given, (i) the horizontal displacement x of bomb B at time t after it is dropped, [1] (ii) the vertical displacement y of bomb B at time t after it is dropped. [1] (c) Calculate the time of flight of bomb B upon striking the truck T. time of flight = s [2]

4 (d) Determine the speed v of truck T. v = m s -1 [2] 2 (a) State Newton’s first law of motion. [1] (b) A uniform ladder of length 12.0 m and mass 40 kg rest on a wall. The lower end of the ladder is at 6.0 m from the wall as shown in Fig. 2.1. The wall is smooth while the ground is rough. 6.0 m Fig. 2.1 12.0 m

5 A man of mass 72 kg starts to cli