Yuan Ching Prelim P1

YUAN CHING SECONDARY SCHOOL Secondary Four Express Course Preliminary Examination 2024 CANDIDATE NAME CLASS INDEX NUMBER PHYSICS Paper 1 Multiple Choice Additional Materials : Multiple Choice Answer Sheet 6091 / 01 11 September 2024 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions for 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. The total number of marks for this paper is 40. This paper consists of 16 printed pages.

2 1 What is the order of magnitude of the diameter of a strand of hair? A 10 mm B 103 cm C 104 μm D 105 nm 2 A newly purchased pendulum clock is found to be slower by 1 min. Which of the following will correct the error? A decreasing the length of the pendulum B decreasing the mass of the pendulum C increasing the length of the pendulum D increasing the mass of the pendulum 3 A diver jumps off from the diving board with an initial speed and decelerates uniformly to a momentary stop before falling with constant acceleration. On entering the water, he experiences a decreasing deceleration and then reaches a constant speed. Which of the following speed-time graphs represents the motion of the diver? A B C D time / s speed / m s-1 speed / m s-1 speed / m s-1 speed / m s-1 time / s time / s time / s

3 4 The speed-time graph below describes the motion of a toy car. What is the average speed of the toy car while moving at constant deceleration? A 4.0 m/s B 5.1 m/s C 8.0 m/s D 24 m/s 5 A block of wood of mass 4 kg moves with an acceleration of 0.8 m/s2 when it is pulled along a rough surface with a force of 15 N. What is the deceleration of the block when the 15 N force is removed? A 0.00 m/s2 B 0.80 m/s2 C 2.95 m/s2 D 3.20 m/s2 6 A rocket of mass 3.50 x 105 kg has a vertical lift off with an upward thrust of 4500 kN. The gravitational field strength is 10 N/kg. What is the initial acceleration of the rocket? A 0.0777 m/s2 B 2.86 m/s2 C 9.99