NYGH 2015-S3EOY-Physics P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2015 Secondary Three PHYSICS 45 minutes Paper 1 Multiple Choice 08:00 – 08:45 Friday 09 October 2015 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 record 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 gravitational field strength g is 10 N kg -1 (near the Earth’s surface). Setters: AJL & AWL This document consists of 11 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2015 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setters: AJL & AWL Physics I 1 Which of the following shows a physical quantity and its correct unit in terms of SI base units? A energy kg m s-2 B force kg m s-1 C moment of a force kg m2 s-2 D power kg m s-3 2 A micrometer screw gauge is used to measure the external diameter of a plastic tube. Diagram 1 shows the reading on the micrometer when it is tightened with nothing between the jaws. Diagram 2 shows the reading taken with the plastic tube between the jaws to measure its external diameter. diagram 1 diagram 2 If the tube material has a thickness of 1.10 mm, what is the internal diameter of the tube? A 9.55 mm B 10.05 mm C 10.13 mm D 10.51 mm 3 Which of the following consists of only vector quantities? A mass, force, moment of force B pressure, velocity, force C velocity, weight, displacement D work done, force, moment of force 0 45 0 25 5 20 10

2015 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setters: AJL & AWL Physics I [Turn over 4 A runner runs 4.0 km towards the South in 0.50 hour and 5.0 km towards the East in 1.5 hours. What is his average speed? A 4.5 km h−1 B 5.0 km h−1 C 5.7 km h−1 D 21 km h−1 5 A moving car drips oil onto the road at a constant rate. The pattern of drips on the road is shown in the diagram below. Which statement best describes the motion of the car? A It accelerated and then decelerated. B It accelerated and then travelled at a steady speed. C It travelled at a steady speed and then accelerated. D It travelled at a steady speed and then decelerated. 6 The speed-time graph below shows a car starting from rest and then uniformly accelerating to a speed of 15 m s–1 in 6.0 s. What is the distance travelled by the car in 6.0 s? A 5 m B 15 m C 45 m D 90 m speed / m s-1 time / s

2015 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School Setters: AJL & AWL Physics I 7 An object falls vertically from rest through the air until it attains its terminal velocity. How does the acceleration of the object change during the fall? A The acceleration decreases from 10 m s–2 to 0 m s–2. B The acceleration increases from 0 m s–2 to 10 m s–2. C The acceleration remains constant at 10 m s–2. D The acceleration remains constant at 0 m s–2. 8 The graph shows how the displacement of a ping-pong ball changes over time. It is released with zero initial speed at time t = 0 s from a height of 1.0 m above a table. The ping-pong ball bounces several times on the table. Neglect air resistance. Which point in the graph represents the instant when the ping-pong ball hits the table the second time? 9 The diagram shows a box placed on a smooth inclined plane with an adjustable angle θ. The angle θ (measured from the horizontal) is increased from 0° to 90°. Which of the following statements is correct? A The acceleration due to gravity changes for different angles. B The acceleration of the box along the inclined plane changes for different angles. C The acceleration of the box along the inclined plane is constant for different angles. D The box moves at uniform speed along the inclined plane for different angles. θ B C D time displacement A 0

2015 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School Setters: AJL & AWL Physics I [Turn over 10 A skier is moving downhill. Her acceleration on soft snow is 4.0 m s –2 and on hard snow is 8.0 m s–2. Which graph shows the motion of the skier when she is moving from soft snow to hard snow? A B C D 11 Which of the following cannot be the magnitude of the resultant force when two forces of magnitudes 8.0 N and 13.0 N act on an object? A 5.0 N B 10.0 N C 18.0 N D 22.0 N 12 A lift and three men inside have a total mass of 600 kg. If the lift is accelerating upwards with an acceleration of 1.10 m s−2, what is the tension in the cable that is pulling the lift upwards? A 1 560 N B 4 830 N C 5 060 N D 6 660 N speed / m s-1 speed / m s-1 time / s time / s speed / m s-1 speed / m s-1 time / s time / s

2015 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School Setters: AJL & AWL Physics I 13 Along a straight road, a 50.0 kg driver decelerated his car from 100 km h−1 to rest in just 1.40 s. What is the magnitude of the force acting on the driver? A 790 N B 890 N C 990 N D 1000 N 14 The diagram shows a grab handle (or handgrip) hanging vertically inside a train. The grab handle is free to swing sideways. Which of the following statements about the motion of the train is correct? A The train is accelerating. B The train is approaching its maximum speed. C The train is decelerating. D The train is moving with a constant speed. 15 A cart is at rest on a frictionless horizontal surface. A vertical board and a powerful battery-operated fan (just in front of the board) are firmly fixed onto the cart as shown in the diagrams below. If the fan is switched on to blow air directly onto the board, which statement about the final motion of the cart is correct? A The cart will not move. B The cart will move to the right. C The cart will move to the left. D The cart will move to and fro repeatedly. fan mounted on cart board mounted on cart to the right to the left fan board ceiling of train

2015 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School Setters: AJL & AWL Physics I [Turn over 16 Two forces of 10 N and 17 N act on a point mass Q as shown in the diagram below. To keep Q in equilibrium, a third force is applied on Q in a horizontal direction. What is the magnitude of this third force? A 13 N B 18 N C 24 N D 27 N 17 Which of the following statements describe(s) action and reaction pair(s) of forces? (1) Gravitational force acted by Earth on you and the gravitational force acted by you on Earth. (2) When hitting a baseball with a bat, the force acted on the ball by the bat and the force acted on the bat by the ball. (3) When you are standing on the ground, your weight and the normal contact force on you. A (1) only B (2) only C (1) and (2) only D (2) and (3) only 18 A 1.0 m uniform iron rod of mass 8.0 kg is being lifted from the ground by a vertical force F exerted at one end.