2022 JVS 4N Physics Prelim P2

1 [Turn over STUDENT NAME CLASS INDEX NUMBER SCIENCE 5105/02 Paper 2 Physics 19 AUGUST 2022 Papers 1 and 2: 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, index number and class on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a HB pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue, correction tape or correction fluid. Answer all the questions in Section A and any two questions in Section B. Enter the question number of the Section B question you have answered on the dotted lines in the grid below. In calculations, you should show all steps in your working, giving your answer at each stage. You are advised to spend no more than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. At the end of the examination, hand in your answers to Paper 1 and Paper 2 separately. The number of marks is given in brackets [ ] at the end of each question or part question. Take acceleration due to gravity on Earth, g, to be 10 m / s2 unless stated otherwise. Setter: Raymond Tan For Examiner’s Use Section A / 14 Section B / 8 / 8 Total / 30 JURONGVILLE SECONDARY SCHOOL PRELIMINARY EXAMINATION 2022 Secondary 4 Normal (Academic) This document consists of 12 printed pages

2 Section A Answer all the questions in the spaces provided. 1 The diagram shows a ball being released from rest. The ball has a mass of 800 g. (a) Mark on the slope with a cross and label A where the ball has the greatest kinetic energy. [1] (b) Calculate the greatest kinetic energy of the ball. Use g = 10 N/kg in your calculations. greatest kinetic energy = ……………….. J [2] [Total: 3] 3.0 m

3 [Turn over 2 A cyclist and a runner had a race around a running track in a park. The graph shows the distance travelled by the cyclist and the runner over time during the race. (a) State the distance travelled by the cyclist at the end of point X. distance = ……………….. m [1] (b) Calculate the average speed of the runner from the start to the end of point Y. average speed = ……………….. m / s [2] [Total: 3]

4 3 The diagram shows a crane lifting some bricks during the construction of a build ing. The weight of the bricks and the counterweight produce moments on the arm of the crane about the point P. The weight of the bricks is 480 000 N. The crane is balanced about the point P. (a) Calculate the clockwise moment about P. clockwise moment abou