Broadrick Secondary Pure Physics Prelim 2022

BP- 3 Name Class BROADRICK SECON DARY SCHOOL SECONDARY 4 EXPRESS PRELIMINARY EXAMINATION 2022 0ioaDR!cL 6 PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 6091/01 September 2022 t hour READ THESE INSTRUCTIONS FIRST There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and O. Choose the one you consider conect and record your choice in soft pencil on the separate OTAS answer sheet. Each conect 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. This question paper consists of 19 printed pages including this page Setter: Ms Amanda de Souza PartnerlnLeaming 3 flurn over lndex Number Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, index number and class on the OTAS answer sheet.

BP-4 2 I Which expression gives a base quantity? A charge per unit time B energy per unit time C force per unit area D mass per unit volume 2 A pair of Vemier calipers is used to measure the diameter of a golf ball. Diagram 1 shows the scale when the jaws are fully closed. Diagram 2 shows the scale when the golf ball is secured between the jaws. 0 1 3 4 cmcm Diagram 1 \A/hat is the diameter of the golf ball? A 3.01 cm B 3.11 cm Diagram 2 C 3.15 cm D 3.19 cm 3 A pendulum has a period of 1.6 s. A stopwatch is started when the pendulum is vertical and moving to the right as shown direction Which diagram shows the position and direction of the pendulum 4.0 s later? ABC direction direction direction direction 6091t1t09t22 D PartnerlnL6aming 4 [Turn over

BP-5 3 4 Two vector quantities are added to produce a resultant. Which statement about the resultant is conect? A The direclion of the rosultant is always different from the directions of the two original vectors. B The direction of the resultant is always the same as the direction of one of the original vectors. C The magnitude of the resultant is always different from the magnitudes of the two original veclors. D The magnitude of the resultant may be zero. 5 A car travels east at a velocity of25 m / s along a straight horizontal track. At time f = 5 s, its velocity starts to change and its acceleration is - 2.0 m / s2. How is the car moving at time I = l5s? A travelling east with decreasing speed B travelling east with increasing speed C travelling west with constant speed D travelling west with increasing speed Object X of mass m is released from a height h- Another object Y of mass 3m is released from a height 3h simultaneously lf both objects fall freely, taking air resastanc€ as negligible, which of the following statements is true? 6 A B c D The acceleration of both obiects increases. The distance between object X and Y decreases and Y overtakes X. The distance between ob,ect X and Y remains constant before object X hits the ground. The velocities of both objects remain constant. 6091t1t09122 ParlnerlnLeaming 5 [Turn over

BP-6 7 Which distance time graph best represents a sky diver iumping off a plane and reaching terminal velocity? distance distance time time distance distance time time 8 Four of the gravitational forces that act between bodies in our Solar System are listed below. the force on the Moon due to the Earth the force on the Earth due to the Sun the force on the Earth due to the Moon the force on the Moon due to the Sun Which two forces are an action-reaction pair? A PandR B PandS C QandR D QandS 6091t1!09n2 4 BA Dc P o R S PartnerlnLeaming 6 ffurn over

BP-7 5 9 A piece of plasticine is first shaped into a solid sphere, before being rolled out into a sheet. What can be said about the densities of the sphere and the sheet? A The densities of the sphere and the sheet are the same. B The densities of the sphere and the sheet cannot be compared as the volumes are unknown. C The density of the sphere is grealer than tho density of the sheet. D The density of the sphere is less than the density of the sheet. lO An astronaut lands on a planet where the gravitational field strength at its surface is lower than that on Earth. Which of the following will remain the same as on Earth? A The ease with which a stationary pendulum can be made to start moving. B The height reached by the asfonaut whon he jumps up with the same initial volocity. C The period of a simple pendulum. D The weight of the spacecraft. 11 A non-uniform rock is placed on an inclined plane. The object is just about to topple. Which position is the centre of gravity of the rock? non-uniform rock inclined plane 60911110s122 PartnerlnLeaming 7 flurn over

BP-8 6 12 Four people of equal weight use different routes to get from a beach tothetop of a sea wall slipway \r"ddu, Which person produces the greatest average power? 13 A measuring cylinder is inverted in a water trough. measuring cylinder can water h = 15 crn rubber tubing lnitially the inverted measuring cylinder is full of water. When the student presses the top of the can, air passes through the rubber tubing into the inverted measuring cylinder until no more air is able to leave the can. The height h of the water column is 15 cm, the atmospheric pressure is 1.0 x 105 Pa, the density of water is 1000 kg / m3 and the gravitational field strength is 10 N / kg. What is the pressure of the air in the measuring cylinder when no more air is able to leave the can? A 1,50x 103Pa B 9.85x 10aPa C 1.00x 105Pa D 1.02 x ldPa 6091t1109t22 ar tttttt person route time taken / s A runs across the beach, then climbs up the ladder '16 B runs up the slipway 8 c walks across the beach, then climbs up the ladder 32 D walks up the slipway 25 PartnerlnLeaming 8 ffurn over ,, top of seawall beach

BP-9 7 l/t A bowl of hot rice is covered with a lid and left to cool. Which statement best explains why it is difficult to lift the lid when the rice is cold? A The force between the water molecules and lid is strong. B The number of air molecules in the bowl decreases as the rice cools. C The pressure of the air inside the bowl is lower than the atmospheric pressure D The water vapour that condenses on the lid makes the lid heavy. 15 ln a Brownian motion experiment involving smoke particles in air, heavy smoke paffcles settle quickly but very light smoke particles remain suspended for long periods. Which statement best explains why the smaller smoke particles do not settle? A Air molecules randomly bombard the very light smoke particles. B Atmospheric pressure has a smaller effect on very light smoke particles. C Earth's gravitational field shength does not act on very light smoke particles. D Very light smoke particles have the same density as air. 16 The particles of a gas, in a container of fixed volume, are supplied with more energy. What effect does this have on the gas? A Both the pressure and temperature of the gas increase. B Neither the pressure nor the temperature ofthe gas increase. C Only the pressure of the gas increases. D Only the temperature of the gas increases. 6091t1t09122 PartnerlnLeaming I [Turn over

BP-IO I ,7 A double-glazed window has two layers of glass separated by a layer of air. The amount of thermal energy transferred by conduction and convection through the layer of air varies with the thickness of the layer of air, as shown in the graph. thermal energy transfer net thermal energy transfer by conduction \ and convection .,' by convection by conduction 0 0.5 1.0 1.5 2.O 2.5 thickness of layer of air / cm Which thickness of the layer of air is the most effective for a double-glazed window? A 0.5 cm B 1.0 cm C 1.5 crn D 2.0 cm 18 A cup made from silver is filled with boiling water from a kettle. VVhy does the outer surface of the cup feel extremely hot to the touch? A Boiling water gives out latent heat. B Convection cunents are formed in the boiling water. C Shiny surfaces are good emitters of infra-red