CEDAR 2025 PHY PRELIM P1 QP

1 CEDAR GIRLS’ SECONDARY SCHOOL PRELIMINARY EXAMINATION 2025 SECONDARY FOUR CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 1 September 2025 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided. 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. 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. This document consists of 17 printed pages.

2 1 Which is the correct SI base unit expression for pressure? A (kg m)/s² B (kg m²)/s³ C kg/(m s²) D kg/(m² s) 2 A glider is descending at constant velocity. The diagram shows the directions of the lift L, air resistance R and weight W acting on the glider. Which vector triangle could represent the forces acting on the glider? A B C D 3 In which row are quantities correctly categorised into scalar quantities and vector quantities? scalar quantities vector quantities A distance and energy velocity and temperature B gravitational field strength and time force and electric field strength C mass and energy weight and acceleration D speed and moment distance and force

3 4 A person stands on the edge of a sea cliff. The person throws a stone vertically upwards. Air resistance acting on the stone can be ignored. The stone eventually hits the sea. Which velocity–time graph best shows the motion of the stone from when it is released until it hits the sea? A B C D 5 An object starts from rest at time t = 0 and moves in a horizontal line. The graph shows how the velocity v of the object varies with time. What is the distance travelled by the object during the time that its acceleration is zero? A 100 m B 400 m C 500 m D 800 m v / ms-1 t / s 25 20 15 10 5 0 0 10 20 30 40 50 60 70 80 time velocity 0 0 time velocity 0 0 time velocity 0 0 time velocity 0 0

4 6 On the asteroid Ceres, a stone dropped from rest from a height of 1.0 m would take 2.8 s to reach the surface of the asteroid. What would be the weight of a 70 kg astronaut on Ceres? A 18 N B 70 N C 250 N D 700 N 7 A race bicycle is accelerating along a level road. Which diagram shows the direction of frictional force F1 on the front wheel and the direction of frictional force F2 on the rear wheel? A B C D direction of motion F2 F1 F2 F1 F2 F1 F2 F1 direction of motion direction of motion direction of motion

5 8 Each diagram illustrates a pair of forces of equal magnitude. Which diagram gives an example of a pair of forces that is described by Newton ’s third law of motion? A B C D 9 A pair of cutters is used to cut a rope. Where should the rope be positioned and at which labelled points should the hands be positioned to produce the greatest cutting force? rope position hands position A P R B P S C Q R D Q S total resistive forces driving force gravitational force gravitational force Moon Earth normal contact force weight lift weight blade handle handle blade P • Q • S R

6 10 Four objects of equal mass rest on a table. The centre of mass of each object is labelled G. Which object is the most stable? A B C D 11 1.5 m 3 of water is mixed with 0.50 m 3 of alcohol. The density of water is 1000 kg /m3 and the density of alcohol is 800 kg/m3. What is the density of the mixture of volume 2.0 m3? A 850 kg/m3 B 900 kg/m3 C 940 kg/m3 D 950 kg/m3 12 One end of a U-shaped tube is attached to a gas tap, with its other end open to the atmosphere. It contains water of density 1000 kg /m3 and the heights of both sides of the water column are shown. The atmospheric pressure is 101 kPa and the gravitational field strength is 10 N/kg. What is the pressure of the gas from the gas tap? A 99 kPa B 100 kPa C 102 kPa D 103 kPa open to atmosphere tube pressure from gas tap water, density 1000 kg/m3 10.2 cm 31.4 cm G x G x G x G x

7 13 Five blocks have the same mass but different base areas. They all rest on a horizontal table. A graph is plotted to show the relationship between the pressure exerted on the table and the base area of the block. Which graph shows this relationship? A B C D 14 A mass attached to the lower end of a spring oscillates up and down. At which points in the path of the mass do the energy in gravitational potential store of the mass (Eg), the energy in elastic potential store in the spring (Ee) and the energy in kinetic store of the mass (Ek) have their highest values? Eg Ee Ek A bottom middle top B bottom top middle C top bottom middle D top bottom top 15 Which energy resource is non-renewable? A geothermal B natural gas C solar D tidal area area area area pressure pressure pressure pressure

8 16 Particles of dust, suspended in water, are viewed through a microscope. The particles can be seen to move irregularly. This movement is due to A convection currents in the water. B evaporation of the water near the dust particles. C gravitational forces acting on the particles of dust. D water molecules hitting the dust particles in a random way. 17 Two samples of the same material have the same mass but different surface areas. Each sample is heated to the same temperature and then left to cool to room temperature. Each sample is allowed to cool to the same final temperature. Which row correctly compares the decrease in energy in internal store and the initial rate of cooling for each sample? decrease in energy in internal store initial rate of cooling A X loses more energy than Y X cools down faster than Y B Y loses more energy than X Y cools down faster than X C X and Y lose the same quantity of energy X cools down faster than Y D X and Y lose the same quantity of energy Y cools down faster than X large surface area small surface area X Y

9 18 Two plastic cups are placed one inside the other. Hot water is poured into the inner cup and a lid is put on top as shown. Which statement is correct? A Heat loss by radiation is prevented by the small air gap. B No heat passes through the sides of either cup. C The bench is heated by convection from the bottom of the outer cup. D The lid is used to reduce heat loss by convection. 19 A scientist wants to determine the specific latent heat of vaporisation of a liquid. He pours the liquid into a vacuum flask and heats it with a 100 W heater. The mass of liquid in the vacuum flask when it starts to boil is 300 g. He continues to heat the liquid for a further 12 minutes, after which the mass of the remaining liquid is 100 g. What is the specific latent heat of vapo