JJC_H1_PHY_P2_Qn

 JJC 2016 8866/JC2 Prelim P2/2016 [Turn Over JURONG JUNIOR COLLEGE 2016 JC2 Preliminary Examination Name Class 16S PHYSICS Higher 1 Structured Questions Candidates answer on the Question Paper. No Additional Materials are required. 8866/02 26 Aug 2016 2 hours READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your name and class in the spaces provided at the top of this page. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use highlighters, glue or correction fluid. 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 question paper consists of 25 printed pages)

 JJC 2016 8866/JC2 Prelim P2/2016 [Turn Over 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 = ut + 1 2 at2 v2 = u2 + 2as work done on/by a gas, W = p V hydrostatic pressure, p = gh resistors in series, R = R1 + R2 + . . . resistors in parallel, 1/R = 1/R1 + 1/R2 + . . .

 JJC 2016 8866/JC2 Prelim P2/2016 [Turn Over 3 Section A Answer all questions in this section. 1 A small block of wood is held at a horizontal distance of 1.2 m from a metal ball as shown in Fig. 1.1 . The metal ball is fired horizontally towards the block at a speed of 8.0 m s -1. At the same instant the ball is fired, the block is released and it falls vertically under gravity. Fig. 1.1 Determine (a) the time taken for the ball to collide with the block. time = s [1] (b) the vertical distance h, travelled by the block when it collides with the ball. h = m [2]

 JJC 2016 8866/JC2 Prelim P2/2016 [Turn Over 4 (c) the speed of the ball just before it collides with the block. speed = m s -1 [2] (d) Explain why the ball will always collide with the block, even if the horizontal speed of the ball or its horizontal distance is changed. [1]

 JJC 2016 8866/JC2 Prelim P2/2016 [Turn Over 5 2 (a) Starting with the definition of work, deduce the change in the gravitational potential energy of a mass m when moved a distance h upwards near the Earth’s surface. [3] (b) Fig. 2.1 below shows a frictionless toy runway. Upon release from point A, Car