Northland 4N SCI PHY PRELIMS 2022 P2

NAME INDEX NO. CLASS This document consists of 11 printed pages including the cover page and 1 blank page. [Turn over NORTHLAND SECONDARY SCHOOL PRELIMINARY EXAMINATION Secondary 4 Normal Academic SCIENCE (PHYSICS) Paper 2 Physics Candidates answer on the Question Paper. No Additional Materials are required. 5105/02 17 August 2022 Paper 1 and 2: 1 hour 15 minutes READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions in Section A and any two questions in Section B. The use of an approved scientific calculator is expected, where appropriate. In calculations, you should show all the steps in your working, giving your answer at each stage. You are advised to spend no longer 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. Setter: Mr Lim Yong Liang Vetter: Mr Aaron Rajoo Section For Examiner's Use A 14 B 16 TOTAL 30

2 Learners who Share, Citizens who Care, Leaders who Dare Section A Answer all the questions in the spaces provided. 1 An object of mass 7 kg is released from rest from the top of a ramp at A. The ramp has a smooth surface. The object moves down along the ramp from A to B. (a) Calculate the gravitational potential energy of the object at A, the top of the ramp. gravitational potential energy = ………..…. J [1] (b) Hence, determine the speed of the object at B, the bottom of the ramp. speed = ………..…. m/s [2] (c) If the same object were to be rolled down a steeper slope from height 10 m above the ground, would the object have a higher speed, lower speed or the same speed as the answer in (b) when it reaches the bottom of the ramp ? Explain your answer. ……………………………………………………………………………………… ………………………………………………………………………………….. [1] [Total: 4] A B 10 m

3 Learners who Share, Citizens who Care, Leaders who Dare [Turn over 2 The diagram shows successive wavefronts of a water wave. The distance between the first and fourth wavefront is 100 m. The wavefront at A takes 49 seconds to reach B. (a) Calculate the wavelength of the wave. wavelength = ………..…. m [1] (b) Determine the period of a single wave. period = ………..…. s [1] (c) Hence, calculate the speed of the wave. speed = ………..…. m/s [2] [Total: 4] wavefronts A B 100 m direction of wave travel

4 Learners who Share, Citizens who Care, Leaders who Dare 3 Complete the table to compare the differences between the mo