2024 CWSS Merged

COMMONWEALTH SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS PHYSICS Name: ________________________________________( ) Class: ___________ Physics 6091/01 Paper 1 Multiple Choice 23 August 2024 Additional Materials: Multiple Choice Answer Sheet 1130 h – 1230h 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, index number and class on the Answer Sheet in the spaces. There are forty 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 answer 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 in this booklet. The use of an approved scientific calculator is expected, where appropriate. Name of setter: Mdm Quek Lay Hong This booklet consists of 18 printed pages including the cover page. [Turn over

2 1 Which order shows units of energy in the correct order of increasing size? A J → kJ → mJ → nJ B mJ → nJ → J → kJ C nJ → mJ → J → kJ D MJ → J → kJ → GJ 2 A car travels at constant speed around a curved road. Which of the following statements about the motion of the car is not correct? A The car is accelerating. B The displacement of the car increases. C The distance travelled per unit time by the car is constant. D The velocity of the car is uniform. A 12 m B 29 m C 34 m D 58 m A 250 N B 900 N C 2100 N D 15000 N 3 A race car is designed to change its high speed very quickly when racing on a track. It can slow down at a deceleration of 20 m/s2. What is its displacement as it comes to a stop in 1.7 s? 4 A van of mass 1 500 kg is moving along a level road with an acceleration of 0.60 m/s2. The force produced by the engine is 1150 N. What is the frictional force between the tyres and the road?

3 5 A car of mass 500 kg has an engine with a power output of 6 .0 kW. The car takes 10 minutes to travel up a slope of vertical height 500 m. Air resistance and friction are negligible. The gravitational field strength g = 10 N/kg. What is the amount of energy in the kinetic store of the car when the car reaches the top of the hill? A 1.1 x 106 J B 2.5 x 106 J C 3.6 x 106 J D 6.1 x 106 J 6 Two blocks are connected by a light string. They move over a frictionless floor with a uniform acceleration of 1.0 m/s2 under the action of a constant force F. What will the acceleration of the 1.0 kg block be if the string breaks? A 0 m/s2 B 1.0 m/s2 C 2.0 m/s2 D 3.0 m/s2 7 A clown riding a unicycle is accelerating up an inclined plane as shown in the diagram. In which direction is the friction acti