NYGH-2021-S4-EOY-Physics-P1

Class Register Number Name End-of-Year Examination 2021 Secondary 4 PHYSICS Paper 1 Multiple Choice 45 minutes Thursday 7 October 0845 – 0930 No Additional Materials are required READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction tape/fluid. Write your name, register number and class on the Question Paper and on the Answer Sheet in the spaces provided. There are thirty questions on 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 in the spaces provided on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. Take the acceleration due to gravity g (or gravitational field strength) to be 10 m s-2 (or 10 N kg-1) near the Earth’s surface. This document consists of 12 printed pages. Setter(s): AJL & MS NANYANG GIRLS' HIGH SCHOOL [Turn over

2 1 Which list of physical quantities contains only vectors? A mass, speed, time B weight, velocity, friction C weight, acceleration, temperature D temperature, time, weight 2 A ticker-tape timer is used to investigate the movement of a toy car. The frequency of the timer is 50 Hz and a portion of the tape is shown below. What is the average deceleration of the toy car? A 0.0 m s-2 B 6.3 m s-2 C 10.0 m s-2 D 25.0 m s-2 3 A car is initially moving with negative velocity and maintains a constant negative acceleration. Which statement must be true? A The car will change direction during its motion. B The car is slowing down. C The displacement of the car is increasing. D The speed of the car is increasing. 4 A ball is thrown vertically upwards at time t = 0 s. It passes a window, on its way up, at time t = 1.2 s. It passes the same window, on the way back down, at time t = 2.0 s. What was the initial speed of the thrown ball? A 8.0 m s-1 B 12 m s-1 C 16 m s-1 D 20 m s-1 5 The SpaceX rocket has a launch mass of 550 000 kg. It is powered by rocket engines which produce a total thrust of 7.6 MN. What will be the acceleration of the rocket at lift-off? A 0.0 m s-2 B 3.8 m s-2 C 38 m s-2 D 380 m s-2 8.0 cm 8.0 cm direction of travel of toy car

3 [Turn over 6 If you are to go to the moon, which of your following physical quantities will change? (i) Weight (ii) Mass (iii) Density A (i) only B (i) and (ii) only C (i) and (iii) only D (ii) and (iii) only 7 A sphere of density 2.5 g cm-3 finds an equilibrium position between liquid X of density 1.0 g