NYGH 2017-S3EOY-Adv Physics P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2017 Secondary Three ADVANCED PHYSICS Paper 1 Multiple Choice 45 minutes Monday 9 October 2017 08:45 – 09:30 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. Given formulae: impulse = F ∆t = mv – mu Setters: AJL & CMH This document consists of 14 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2017 End-of-Year Examination Secondary Three Advanced Physics 2 Nanyang Girls’ High School Setters: AJL & CMH Adv. Physics I 1 What is the reading shown on the micrometer screw gauge? A 2.13 mm B 3.13 mm C 2.63 mm D 5.13 mm 2 A student uses a spring balance to measure the weight of an object hanging from it. The spring balance is marked every 0.2 N but has a zero error of 0.4 N. The student is not aware of this zero error and writes down a reading of 1.5 N. Is the reading accurate and is it measured to the correct precision of the instrument? accurate precise A no no B no yes C yes no D yes yes 3 Which of the following is a scalar quantity? A The displacement of a moving bus. B The tension in a cable supporting a lift. C The normal contact force on a rolling ball. D The liquid pressure on a diver underwater. 4 A bird flies 3.0 km due west and then 2.0 km due north. What is the magnitude of the bird’s displacement? A 2.0 km B 3.0 km C 3.6 km D 5.0 km 15 10

2017 End-of-Year Examination Secondary Three Advanced Physics 3 Nanyang Girls’ High School Setters: AJL& CMH Adv. Physics I [Turn over 5 In an experiment, a light gate is set up (with a light source and light sensor) connected to an electronic timer. A trolley with a piece of card of width 5.0 cm passes through the light gate in 0.25 s. A quantity is calculated: s 0.25 cm 5.0 = 20 cm s−1 What does this quantity represent? A The average speed of the trolley passing the light gate. B The instantaneous speed of the trolley passing the light gate. C The average acceleration of the trolley passing the light gate. D The instantaneous acceleration of the trolley passing the light gate. direction of motion of trolley piece of card electronic timer light sensor light source

2017 End-of-Year Examination Secondary Three Advanced Physics 4 Nanyang Girls’ High School Setters: AJL & CMH Adv. Physics I 6 Ball X is thrown straight up in the air and, at the same instant, ball Y is released from rest and allowed to fall. Neglect air resistance. Which velocity-time (v-t) graph best represents the motion of the two balls? A B C D v 0 t X Y v 0 t X Y v 0 t X Y v 0 t X Y

2017 End-of-Year Examination Secondary Three Advanced Physics 5 Nanyang Girls’ High School Setters: AJL& CMH Adv. Physics I [Turn over 7 A brick is weighed using two instruments: (1) a newton-meter (or spring balance) giving readings in grams (2) a pair of scales (or pan balance) balancing with known masses in grams The brick is weighed again on the moon using both instruments. Are the readings for each instrument the same or different when taken on earth and on the moon? on newton-meter on scales A same same B different different C different same D same different 8 The following graphs describe the motion of an object. (1) displacement-time (2) velocity-time (3) acceleration-time graph graph graph Which of the above graphs show(s) that a constant resultant force is acting on this object? A (1) and (2) only B (1) and (3) only C (2) and (3) only D (1), (2) and (3) s t v t a t

2017 End-of-Year Examination Secondary Three Advanced Physics 6 Nanyang Girls’ High School Setters: AJL & CMH Adv. Physics I 9 The diagram below shows the trajectory (path) of a cannon-ball fired from a cannon. Which of the following best shows the direction of the resultant force acting on the cannon-ball at different times during its trajectory? A B C D 10 A ball is fired from a cannon at point 1 and follows the trajectory shown in the diagram below. Air resistance may be neglected. Four possible vectors are shown below: A zero vector B C D Which vector above best represents the ball’s acceleration at point 2? 1 2 3

2017 End-of-Year Examination Secondary Three Advanced Physics 7 Nanyang Girls’ High School Setters: AJL& CMH Adv. Physics I [Turn over 11 An object is projected at an angle to the horizontal in a gravitational field and it follows a parabolic path, PQRST. These points are the positions of the object after successive equal time intervals, T being the highest point reached. Neglect air resistance. The displacements PQ, QR, RS and ST A are equal. B decrease at a constant rate. C have equal horizontal components. D have equal vertical components. 12 A motorcycle stunt -rider moving horizontally takes off from a point 1.25 m above the ground and lands 10 m away as shown in the diagram. What is the speed at take-off? A 5.0 m s -1 B 10 m s-1 C 15 m s-1 D 20 m s-1 13 In deep outer space, there is no gravity. If a force acts on an object, it will gain a great speed after some time. What is the speed of a 100 g mass if a force of 2.0 N acts on it for 2 days? The mass is initially at rest. A 2.4 × 105 m s−1 B 3.5 × 106 m s−1 C 7.4 × 107 m s−1 D 3.0 × 108 m s−1 14 A parachutist opens a parachute and an upward force acts on it. The mass of the parachutist and parachute are 50.0 kg and 5.0 kg respectively. The parachutist and parachute accelerate downwards at 1.0 m s−2. What is the total air resistance acting on them? A 450 N B 495 N C 550 N D 605 N 1.25 m 10 m

2017 End-of-Year Examination Secondary Three Advanced Physics 8 Nanyang Girls’ High School Setters: AJL & CMH Adv. Physics I 15 Curling is a sport played with 20 kg stones that slide across an ice surface. Suppose a curling stone sl iding at 1.0 m s -1 strikes another stone and comes to rest in 2.0 ms. Approximately how much force is exerted on the first stone during the impact? A 200 N B 1000 N C 2000 N D 10 000 N 16 The diagram shows two blocks sliding on a frictionless surface. The smaller block of mass m has a speed 2v. The bigger block of mass 3m has a speed v. Eventually the smaller block overtakes the larger one, collides with it and sticks together. What is the speed of the two blocks after the collision? A 2 v B 5 4v C 4 5v D 2v 17 A plane lamina is freely suspended from point P. The weight of the lamina is 2.5 N and its centre of gravity is at C. The lamina is displaced to the position shown.