2023 AHS Physics Prelim Paper 1

1 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over Anglican High School Secondary Four Preliminary Examination 2023 CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 13 Sep 2023 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST DO NOT TURN OVER THE PAGE UNTIL YOU ARE TOLD TO DO SO. Write in soft pencil. Write your name, index number and class on all papers you hand in. Do not use staples, paper clips, highlighters, glue or correction tape. There are forty 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 on the separate Answer Sheet. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done on this question paper. The use of an approved scientific calculator is expected, where appropriate. This document consists of 15 printed pages. 4 S4

2 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over 1 A student writes down the order of magnitude of the diameter of the Earth, diameter of an atom and length of a football field. Which of the following is correct? diameter of Earth diameter of atom length of football field A B C D 1.0 x 104 km 1.0 x 107 km 1.0 x 104 km 1.0 x 107 km 1.0 x 10-1 nm 1.0 x 10-1 m 1.0 x 10-1 nm 1.0 x 10-1 m 10 x 100 m 10 x 100 m 10 x 101 m 10 x 101 m 2 The time taken for a pendulum to swing from position P to position Q and then to position R is 1.5 s. How many complete periods of the pendulum are there in one minute? A 15 B 30 C 40 D 60 3 Three forces act on a mass M as shown. What is the approximate direction of the additional force required to keep the mass M stationary? A north-east B north-west C south-east D south-west P Q R M 30 N south 45 N west 15 N east

3 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over 4 The diagram shows a velocity-time graph. Which of the following motion can be represented by the velocity-time graph shown above? A A parachutist falling in air before opening his parachute. B A high jump athlete jumping up vertically and landing on the crash mat. C A child jumping up vertically and landing on a trampoline. D A rock falling from the top of a mountain into seawater. 5 The diagram shows the speed-time graph of a moving object over a period of 50 s. What is the average speed of the object when it is decelerating? A 10 m / s B 11 m / s C 12 m / s D 17 m / s 6 The diagram below shows a ladder on the ground leaning against a wall and the forces acting on the ladder. The effect of friction cannot be ignored. How many pairs of action-reaction forces are shown in the diagram above? A 0 B 1 C 2 D 3 velocity time speed m / s time / s 4.0 8.0 12.0 0 10 20 30 40 50 16.0 rough wall rough ground N2 N1 W f2 f1 ladder 0

4 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over 7 A block is being pulled along a rough surface with a constant force of 20 N and it moves at a constant speed of 2.0 m / s. After 5.0 s, another constant force of 10 N is applied on the block in the opposite direction. Which of the following describes the motion of the block after 5.0 s? A accelerates uniformly B travels at a constant speed of 2.0 m / s C travels at a constant speed that is lower than 2.0 m / s D decelerates uniformly 8 Eight identical steel ball-bearings, each of mass 18 g, are immersed in a measuring cylinder containing 25 cm 3 of water. The density of each steel ball -bearing is 9.0 g / cm 3 and the density of water is 1.0 g / cm3. Assuming that all the steel ball-bearings are fully submerged under water, what is the water level reading on the measuring cylinder? A 39 cm3 B 40 cm3 C 41 cm3 D 43 cm3 9 What is the moment of the force, F, about pivot O? A Fd1 B Fd2 C Fd3 D Fd4 first 5.0 s: after 5.0 s: 20 N 20 N 10 N rough surface rough surface pivot O d2 d1 d3 d4 force F

5 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over 10 A uniform plank weighing 10 N is supported by two ropes at points H and J. A box weighing 12 N is placed as shown with the centre of gravity (c.g.) of the box 1.5 m away from K. The box is then slowly shifted towards the left. What is the distance of the c.g. of the box from position K when the plank is horizontal and the tension in each rope is 11 N? A 1.4 m B 1.6 m C 2.1 m D 2.6 m 11 The diagram below shows a simple mercury barometer that has been correctly constructed. At which point in the mercury column is the pressure equal to 10 cm Hg less than the atmospheric pressure? 12 The diagram shows a tank with sloping sides which contains water to a depth of 1.8 m. The density of water is 1000 kg / m3. The gravitational field strength is 10 N / kg. The atmospheric pressure is 1.0 x 105 Pa. What is the pressure caused by the water on the base of the tank? A less than (1.8 x 1000 x 10) Pa B equal to (1.8 x 1000 x 10) Pa C larger than (1.8 x 1000 x 10) Pa D cannot be determined as there is not enough information given H J K (not to scale) 12 N 1.2 m 3.0 m 1.5 m 0 50 100 cm B C D A 1.8 m water base of tank

6 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over 13 A gas supply is connected to a mercury barometer. The same gas supply is then connected to a water barometer. The density of mercury is 13 600 kg / m3 and the density of water is 1000 kg / m3. What is the value of h? A 0.68 m B 0.82 m C 68 m D 82 m 14 A box of mass 2.0 kg is pushed along a 12 m ramp with a force F of 15.0 N and accelerates from point P to point Q. The speed of the box is 2.0 m / s at P and the average frictional force acting on the box is 4.0 N throughout the motion. The gravitational field strength is 10 N / kg. What is the speed of the box at point Q? A 5.7 m / s B 6.0 m / s C 8.0 m / s D 16 m / s (not to scale) mercury water 6.0 cm 5.0 cm gas supply gas supply h Q P 12 m 4.0 N 15.0 N 5.0 m initial speed = 2.0 m / s 2.0 kg

7 Anglican High School 2023_PRELIM_S4_PHY_P1 [Turn over X Y 15 Which of the following is equivalent to the unit of power? A J / s B kg m / s2 C N m D kW h 16 A student writes down a list of energy: chemical, light, thermal, elastic, gravitational, electric. How many of the energies listed above are potential energies? A one B two C three D four 17 Two cuboids made of the same material are shown in the diagram below. X and Y are at the same temperature. A student made some claims about X and Y. (i) They have the same density. (ii) They have the same inertia. (iii) They have the same heat