O_Lvl_Science_Physics_Bedok_South_Sec_Prelim_2019

1 BEDOK SOUTH SECONDARY SCHOOL PRELIMINARY EXAMINATION 2019 4E5N CANDIDATE NAME CLASS REGISTER NUMBER Science (Physics/ Chemistry) Paper 1 Additional Material: Multiple Choice Answer Sheet 5076 03 Sep 2019 1 hour READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work you hand in. Do not use paper clips, highlighters, glue or correction fluid. There are forty questions in this section. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider to be correct and record your choice in soft pencil on the separate answer sheet. Each correct answer will score one mark. A mark will not be ded ucted for a wrong answer. Any rough working should be done in this question paper. A copy of the Periodic Table is printed on page ___. Setter: Mr Sean Goh and Ms Corinna Teo This document consists of ___ printed pages including the cover page www.KiasuExamPaper.com 71

2 1 Which of the following consist of only vector quantities? A mass, distance, time B friction, velocity, electromotive force C tension, speed, energy D weight, displacement, electrostatic force 2 The diagram shows two forces X and Y act on an object. Which arrow below shows the possible direction of the resultant force? ABCD 3 The diagram shows a ball bearing being measured using a micrometer screw gauge. What is the diameter of the ball bearing? A 2.25 mm B 2.52 mm C 2.75 mm D 3.25 mm www.KiasuExamPaper.com 72

3 4 A digital stopwatch to time the period of a simple pendulum. Two readings for 20 oscillations are as follows: 34.98 s and 35.70 s. What is the average period of the pendulum? A 0.28 s B 1.77 s C 3.53 s D 35.34 s 5 The speed-time graphs of car X and car Y are shown below. When will the two cars meet each other? A 3 s B 4 s C 5 s D 6 s 6 A wooden plank rests in equilibrium on two boulders on opposite sides of a narrow stream. Three forces of size P, Q and R act on the plank. Which shows the correct relationship for the three forces? A P + Q = R B P + R = Q C P = Q = R D P = Q + R 2 4 6 8 0 0 1 23 4 5 6 t / s v / m/s Car X Car Y www.KiasuExamPaper.com 73

4 7 A car of mass 800 kg is being driven along a level road. The engine supplies a forward force of 3600 N and the total resistive force is 2000 N. What is the acceleration of the car? A 2.0 m/s2 B 2.5 m/s2 C 4.5 m/s2 D 7.0 m/s2 8 Which of the following objects has the greatest inertia? A a stationary car of mass 800 kg B a 2 kg trolley traveling at 0.5 ms-1 C a ball of mass 200 g traveling at 4.0 ms-1 D a 50 kg athlete running the 100 m race in 10 s 9 A horizontal pole is attached to the side of a building as shown. There is a pivot P at the wall and a chain is connected from the end of the pole higher up the wall. There is a tension F in the chain. What is the moment of the force F about pivot P? A F x d B F x h C F x l D