NYGH 2018-S3EOY-Physics P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2018 Secondary Three PHYSICS 45 minutes Paper 1 Multiple Choice 08:45 – 09:30 Tuesday 9 October 2018 Additional materials: Optical Answer Sheet (OAS) READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your name, register number and class in the spaces at the top of this page. Do not use staples, paper clips, highlighters, glue or correction fluid on the Multiple Choice Optical Answer Sheet (OAS) provided. Write in soft pencil your name, class and register number on the Optical Answer Sheet. There are thirty questions in this paper. Answer all questions. For each question there are four possible answers, A, B, C and D. Choose the one you consider correct and shade the lozenge of your choice in soft pencil on the Optical Answer Sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. The use of an approved scientific calculator is expected, where appropriate. Any rough working should be done in this booklet. The acceleration due to gravity (or gravitational field strength) g is taken to be 10 m s −2 (or 10 N kg−1) near the Earth’s surface. Setters: TW & HWQ This document consists of 13 printed pages and 1 blank page. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2018 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setters: TW & HWQ Physics I 1 A micrometer is used to measure the thickness of a sheet of metal. Diagram 1 shows the micrometer reading with the jaws closed and no metal sheet between the jaws. Diagram 2 shows the micrometer reading w ith the jaws closed around the metal sheet. diagram 1 diagram 2 What is the thickness of the metal sheet? A 5.25 mm B 5.39 mm C 5.75 mm D 5.89 mm 2 The average mass of an adult man is 62 kg. What is possibly the volume of an adult man? A 0.0060 m 3 B 0.060 m3 C 0.60 m3 D 6.0 m3 3 A student measures the acceleration due to gravity by dropping a lead mass. The experiment is repeated a total of four times and the results are shown in the table below. acceleration / m s-2 11.4 11.5 11.5 11.6 Which statement is correct? A His results are accurate and precise. B His results are accurate but not precise. C His results are precise but not accurate. D His results are neither accurate nor precise. 0 35 25 30 40 5 0 5 0 15 10

2018 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setters: TW & HWQ Physics I [Turn over 4 The time taken for a pendulum to swing from position X to position Y of maximum displacement is 1.2 s. What is the frequency of its oscillation? A 0.21 Hz B 0.28 Hz C 0.42 Hz D 0.83 Hz 5 A ball is thrown vertically upward from the top of a cliff with a velocity of 2 0 m s -1. It hits the water surface 5.2 s later. Ignoring the effect of air resistance, w hich is the acceleration-time graph of its motion? A B C D X Y 2.0 a / m s-2 t / s 0 5.2 10 -10 2.0 a / m s-2 t / s 0 5.2 10 -10 2.0 a / m s-2 t / s 0 5.2 10 -10 2.0 a / m s-2 t / s 0 5.2 10 -10

2018 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School Setters: TW & HWQ Physics I 6 Four balls with different masses are dropped from the heights shown. Ignoring air resistance, which ball has the greatest average speed? 7 The graph shows how the distance travelled by a car varies with time. Which row correctly describes the speed of the car in each section of the graph? P to Q Q to R R to S A constant zero increasing B constant zero decreasing C increasing zero increasing D increasing constant increasing P Q R S distance time 0 0 A B C D 4.0 m 1.0 m 3.0 m 2.0 m ground 4.0 kg 3.0 kg 2.0 kg 1.0 kg

2018 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School Setters: TW & HWQ Physics I [Turn over 2.0 m S T 8 The table shows the speed of a car at 5-second intervals. time / s 0 5 10 15 20 speed / m s-1 0 5.0 15.0 30.0 50.0 Which row correctly describes the speed and acceleration of the car? speed acceleration A increasing constant B increasing increasing C decreasing constant D decreasing increasing 9 A car travels with a constant acceleration of 1.3 m s −2 along a straight road. It drips oil at a constant rate of 1 drop every 2.0 seconds. The diagram below (not to scale) shows the oil marks on the road. What is the distance between the two oil marks S and T? A 15 m B 18 m C 28 m D 33 m 10 A tennis ball of mass 0.050 kg travels horizontally at a speed of 25 m s −1. The ball hits a tennis racket and rebounds horizontally at a speed of 45 m s −1. The ball is in contact with the racket for 50 ms. What average force does the racket exert on the ball? A 0.020 N B 0.070 N C 20 N D 70 N 25 m s−1 45 m s−1 ball racket

2018 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School Setters: TW & HWQ Physics I 11 A roller is pulled along a horizontal ground in the direction shown. In which direction does the force of friction exerted by the ground on the roller act? 12 A constant force acts on a body of mass m for a time t. The increase in speed of the body depends on (1) the initial velocity of the body (2) the mass m (3) the time t A (1) and (2) only B (1) and (3) only C (2) and (3) only D (1), (2) and (3) 13 Two blocks A and B of masses 2.0 kg and 3.0 kg respectively are placed in contact on a smooth horizontal surface as shown below. A constant force of 10.0 N acts on block A. What is the force exerted on A by B? A 4.0 N to the left B 4.0 N to the right C 6.0 N to the left D 6.0 N to the right A B 2.0 kg 3.0 kg 10.0 N smooth surface direction of travel roller handle A D B C

2018 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School Setters: TW & HWQ Physics I [Turn over 14 A man throws a stone vertically upwards. Ignoring the effect of air resistance, which row describes the magni tude and direction of the force acting on the stone after it leaves the man’s hand? magnitude direction A increasing downwards B constant downwards C increasing upwards D constant upwards 15 An object of weight 20 N is placed on a weighing scale in a lift. What is the reading shown on the weighing scale when the lift is moving downwards with a deceleration of 2.0 m s-2? A 0 N B 16 N C 20 N D 24 N 16 A parcel is placed on a horizontal conveyor belt. The conveyor belt and the parcel move to the right at constant speed. Only two horizontal forces act on the parcel, the air resistance and friction with the conveyor belt. Which row correctly compares the direction and magnitude of these two forces? direction magnitude A opposite the same B opposite different C the same the same D the same different parcel conveyor belt direction of motion of parcel direction of motion of the conveyor belt

2018 End-of-Year Examination Secondary Three 8 Nanyang Girls’ High School Setters: TW & HWQ Physics I 17 Some office filing cabinets have a mechanism that allows only one drawer to be opened at a time as shown below. If more drawers are opened at the same time the cabinet may topple forward. Why is this so? A Its centre of gravity is raised. B Its centre of gravity is lowered. C Its centre of gravity is not vertically within the base. D Its gravitational potential energy is increased. 18 A 10.0 m lo