Sec_4_Science_Physics_SA2_2018_West_Spring

West Spring Secondary School PRELIMINARY EXAMINATION 2018 SCIENCE (PHYSICS, CHEMISTRY) Paper 1 Multiple Choice 5076/01 SECONDARY 4/5 EXPRESS/ NORMAL ACADEMIC Name ______________________________ ( ) Date 17 September 2018 Class _____________ Duration 1 hour Additional Materials: Optical Mark Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, index number and class on the Multiple Choice Answer Sheet provided. Write in dark blue or black pen. There are forty questions in this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in the Multiple Choice Answer Sheet provided. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. A copy of the periodic table is provided. The use of an appropriate scientific calculator is expected, where appropriate. This document consists of 17 printed pages including this cover page. Setter: Mr Mok KF and Ms Priscilla Yu [Turn over] www.KiasuExamPaper.com 288

2 1 In the diagram below, a micrometer screw guage is used to measure the diameter of a ball bearing. The actual diameter of the ball bearing is 4.65 mm. What is the zero error of this micrometer? A -0.52 mm B -0.02 mm C +0.02 mm D +0.52 mm 2 The diameter of four spherical objects W, X, Y and Z are tabulated below. Object Diameter W 17 Pm X 4.88 x 10 3 km Y 3.74 nm Z 6.7 x 10 -2 m Which of the following correctly lists the objects in ascending order of diameter? A X, W, Z, Y B Y, W, Z, X C Y, Z, W, X D Z, Y, X, W 3 The diagram below shows four objects placed on a slope. The dot in each object indicates its centre of gravity. Which object is the most unstable? www.KiasuExamPaper.com 289

3 4 Elfie is jogging initially at constant speed around a track. He gets distracted by a friend at the grandstand and then jogs at a lower constant speed. Which of the following shows the distance-time graph of Elfie’s jog? AB CD 5 Two similar balls are dropped from a building at the same time. One falls from 40 m from the ground while the other from 20 m. Assuming that air resistance is negligible, which physical quan tity is the same for both balls just before they reach the ground? A acceleration B final velocity C displacement D kinetic energy www.KiasuExamPaper.com 290

4 6 A person lifts boxes of equal weight onto a platform. Which quantity would not affect the total work done by the person? A the mass of the boxes B the number of boxes lifted C the time taken to lift the box D the height of the platform above the ground 7 A bullet of mass 0.040 kg enters a wooden target horizontally. Its speed of entry is 300 m/s and it comes to rest 5.0 cm into the target, at the same height as the point of entry, as shown. What is the frictional force exerted on the bullet by the wooden target? Assume the frictional force is constant. A 120 N