NYGH 2019-S3EOY-Physics P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2019 Secondary Three PHYSICS 45 minutes Paper 1 Multiple Choice 08:45 – 09:30 Tuesday 15 October 2019 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: HWQ & SL This document consists of 14 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2019 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setters: HWQ & SL Physics I 1 Which group of quantities consists of only vectors? A mass, energy, time B weight, acceleration, pressure C force, displacement, velocity D speed, distance, moment 2 The diameter of a steel ball is measured using a micrometer screw gauge. A student takes an initial zero reading (diagram 1) and then a reading of the diameter (diagram 2). What is the true diameter of the ball? A 7.05 mm B 7.21 mm C 9.05 mm D 9.21 mm 3 Four students each made a series of measurements of the acceleration of free fall g. The table shows the results obtained. Which student obtained a set of results that could be described as accurate but not precise? student g / m s−2 A 8.1 9.2 10.1 11.2 B 9.0 8.9 8.7 8.8 C 9.9 10.0 10.0 10.1 D 11.0 13.0 9.0 7.0 diagram 1 diagram 2

2019 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setters: HWQ & SL Physics I [Turn over 4 A student takes 6.0 s to walk from E to F, and then takes another 6.0 s to walk from F to G as shown below. EFG forms an equilateral triangle with sides of length 8.0 m. What is the magnitude of his average speed and velocity when travelling from E to G? speed / m s−1 velocity / m s−1 A 1.3 0.67 B 0.67 1.3 C 2.7 1.3 D 1.3 2.7 5 A ticker-tape timer is used to investigate the movement of a toy car. The frequency of the timer is 10 Hz and a portion of the tape is shown in the figure below. What is the average acceleration of the toy car? A 6.7 cm s−2 B 8.3 cm s−2 C 13 cm s−2 D 25 cm s−2 E F G 8.0 m 8.0 m Toy . . . . . . . . .. 2.0 cm 1.0 cm

2019 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School Setters: HWQ & SL Physics I 6 A car rolls down a sloping runway and reaches a smooth flat surface as shown in the figure below. Which of the following displacement-time graphs best illustrates the motion of the car? A B C D 7 The following graph represents objects H and J in a state of linear motion, with H and J starting from the same point. Which of the following statements is correct? A J is travelling at a greater average speed than H over 10.0 s. B J overtakes H at 5.0 s. C J undergoes increasing acceleration. D J and H have the same displacement at 10.0 s. velocity / m s-1 time / s H J 30 20 10 5.0 10.0 0 displacement time 0 displacement time 0 displacement time 0 displacement time 0

2019 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School Setters: HWQ & SL Physics I [Turn over 8 A boy throws a ball vertically upwards. It rises t o a maximum height, where it is momentarily at rest, and then falls back to his hands. Which row gives the acceleration of the ball in m s −2 at various stages in its motion? (Take vertically upwards as positive. Ignore air resistance.) acceleration when rising at maximum height falling A 10 0 −10 B 10 10 10 C −10 −10 −10 D −10 0 10 9 Object K falls freely from rest for 5.0 seconds and object L also falls freely from rest for 15.0 s. How does the distance by which object L falls compare with object K? Assume air resistance is negligible. A Object L travelled three times as far as object K. B Object L travelled six times as far as object K. C Object L travelled nine times as far as object K. D Object L travelled twelve times as far as object K. 10 A car is travelling with uniform acceleration along a straight road. The road has marker posts every 100 m. When the car passes one post, it has a speed of 15 m s –1, and when it passes the next one, its speed is 25 m s–1. What is the car’s acceleration? A 0.050 m s−2 B 0.50 m s−2 C 1.0 m s−2 D 2.0 m s−2 marker posts 100 m

2019 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School Setters: HWQ & SL Physics I 11 An empty lift of mass 500 kg is moving up with a uniform velocity of 1.0 m s −1. What is the resultant force on the lift? A 0 N B 4500 N C 5000 N D 5500 N 12 A body is moving under the action of a constant net force. What change must the body undergo? A change in acceleration B change in mass C change in speed D change in velocity 13 A man pulls a sledge of mass 22 kg across level ground with a horizontal force of 4 0 N. A constant force of friction of 10 N acts on the sledge. What is the acceleration of the sledge? A 0.36 m s−2 B 1.4 m s−2 C 1.8 m s−2 D 2.3 m s−2 lift 1.0 m s−1 floor 40 N 10 N

2019 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School Setters: HWQ & SL Physics I [Turn over 14 Boxes M and N are stacked one on top of the other on a frictionless floor as shown. Box M has a mass of 3.0 kg and box N has a mass of 7.0 kg. If 70 N is applied on box N to move both boxes, what is the net force acting on box N? A 12 N B 49 N C 70 N D 98 N 15 Four of the gravitational forces that act between bodies in the Solar System are described below. P the force on the Moon due to the Earth Q the force on the Earth due to the Sun R the force on the Earth due to the Moon S the force on the Moon due to the Sun Which two forces form an action-reaction pair? A P and Q B P and R C Q and S D R and S 16 A crate is pulled along a smooth level surface by two workers using ropes. Worker A exerts a force of 15 N while worker B exerts a force of 20 N. Which of the following cannot be the magnitude of the resultant force acting on the crate? A 4 N B 9 N C 16 N D 28 N M N 70 N floor

2019 End-of-Year Examination Secondary Three 8 Nanyang Girls’ High School Setters: HWQ & SL Physics I 17 A weight W hanging from a string is pulled aside by a horizontal force F as shown in the diagram. The tension in the string is T. Which of the following must result in a decrease in the angle θ? A increase W and increase F B decrease W and increase F C decrease W and decrease F D increase W and decrease F 18 A uniform metre rule , UV,