2024 NASS Sc(Phy)_P2

1 NAS/2024/Prelim/4E/Science (Physics)/5086/02 Name: ..................................................................... Register no: .......... Class: ................... ... NGEE ANN SECONDARY SCHOOL O PRELIMINARY EXAMINATION SCIENCE (PHYSICS/CHEMISTRY) 5086/02 PAPER 2 23 August 2024 1 h 15 min Additional materials: NIL READ THESE INSTRUCTIONS FIRST Write your name and index number on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams, graphs, tables or rough working. Section A Answer all questions. Section B Answer any one questions out of two. Write your answers in the spaces provided. At the end of the examination, fasten all your papers securely together. The number of marks is given in brackets [ ] at the end of each question or part question. Checked by student: _____________________ Date: ______________ This document consists of 17 printed pages and 1 blank page (Including this cover page) For Examiner’s Use Question Marks Section A /55 Section B /10 Total /65

2 NAS/2024/Prelim/4E/Science (Physics)/5086/02 Section A – 55 Marks Answer all questions in the spaces provided. 1 Fig. 1.1 shows the speed-time graph of a car. Fig. 1.1 (a) Describe the difference in the motion s of the car during the time from the 10 th to the 14th second and the time from the 5th to the 10th second. ………………………………………………………………...……………………….…...… …………………………………………………………………………………….………. [1] (b) Calculate acceleration of the car from the 10th to the 14th second. Acceleration = ……………………. m/s2 [2] (c) The car moves with uniform deceleration to rest from the 14 th to the 18 th second. Complete the graph on Fig. 1.1 to represent this. [1] (d) Calculate the distance moved for the first 10 seconds. Distance = ………….. m [2] speed / ms-1 time / s 6 10 20 0 5 10 14 18

3 NAS/2024/Prelim/4E/Science (Physics)/5086/02 2 Fig 2.1 shows a bus of mass 2400 kg moving along a straight road. The engine produces a forward force of 12000 N. The bus also experiences a total retarding force of 3200 N. (a) Calculate the acceleration of the bus. Acceleration = ……………..m/s2 [2] (b) The acceleration of the bus gradually decreases until the bus comes to a uniform speed although the driving force remained constant. Explain why this happens. ………….…………………………………………………………………………………. ………….…………………………………………………………………………………. ………….………………………………………………………………………………[2] Fig 2.1

4 NAS/2024/Prelim/4E/Science (Physics)/5086/02 3 Fig. 3.1 shows a uniform metre rule balanced on a pivot at the 40 cm mark. The metre rule balances when a load of 5 N is suspended at the 20 cm mar