RVHS_H1_PHY_P2_QP

River Valley High School Pg 1 of 24 Year 6 H1 Physics 8866 Preliminary Examinations II 2016 RIVER VALLEY HIGH SCHOOL YEAR 6 PRELIMINARY EXAMINATIONS II H1 PHYSICS 8866 PAPER 2 15 SEPTEMBER 2016 2 HOURS CANDIDATE NAME CENTRE NUMBER S INDEX NUMBER CLASS 6 INSTRUCTIONS TO CANDIDATES DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO. Read these notes carefully. Write your name, centre number, index number and class in the spaces at the top of this page and on all work you hand in. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected where appropriate. Candidates answer on the Question Paper. No Additional Materials are required. Section A Answer all questions. Section B Answer any two questions. You are advised to spend about one hour on each section. The number of marks is given in brackets [ ] at the end of each question or part question. ____________________________________________________________________________ This document consists of 24 printed pages. FOR EXAMINERS’ USE Section A 1 6 2 5 3 6 4 9 5 5 6 9 Section B 7 20 8 20 9 20 Deduction TOTAL 80

River Valley High School Pg 2 of 24 Year 6 H1 Physics 8866 Preliminary Examinations II 2016 Data speed of light in free space, c = 3.00  108 m s–1 elementary charge, e = 1.60  10–19 C the Planck constant, h = 6.63  10–34 J s unified atomic mass constant, u = 1.66  10–27 kg rest mass of electron, me = 9.11  10–31 kg rest mass of proton, mp = 1.67  10–27 kg acceleration of free fall, g = 9.81 m s –2 Formulae uniformly accelerated motion, 21 2su t a t 22 2vu a s work done on/by a gas, Wp V  hydrostatic pressure, p gh resistors in series, 12RR R   resistors in parallel, 121/ 1/ 1/RR R  

River Valley High School Pg 3 of 24 Year 6 H1 Physics 8866 Preliminary Examinations II 2016 [Turn over Section A (40 marks) Answer all the questions in the spaces provided. 1 To estimate the frictional force acting on a truck, the driver puts his truck at the neutral gear (not stepping on the accelerator nor applying any brakes) while moving on a level road. He finds that the speed slows down from 24 km h1 to 18 km h1 over a distance of 10.5 m. The truck is of mass 1500 kg. (a) (i) Show that the frictional force acting on the truck travelling on the level road is 1400 N. [1] (ii) Hence or otherwise, determine the pow er developed by the truck’s engine when it is travelling at a constant speed of 12 m s 1 on the level road. The frictional force can be assumed to be constant. power = …………………………. W [2] (b) The truck then moves up a gentle slope of 1.0  as shown in Fig. 1.1. The frictional force acting on