SJI_2020 Year 3 EOY Physics 6091 P1

ST JOSEPH’S INSTITUTION END-OF-YEAR EXAMINATION 2020 (YEAR 3) CANDIDATE NAME CLASS INDEX NUMBER PHYSICS Paper 1 Additional Materials: Multiple Choice Answer Sheet 6091/01 7 OCTOBER 2020 45 minutes (08:00 – 08:45) 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 in the spaces provided. There are thirty 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 Multiple Choice 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. This document consists of 11 printed pages including this cover page.

2 1 In a practical session, a student needs to measure the internal diameter, depth and thickness of a glass beaker. Which of the following instrument(s) should the student use? A micrometer only B vernier caliper only C micrometer and vernier calliper D micrometer or vernier calliper 2 Fig. 2.1 shows the reading of the vernier calliper when it is completely closed. Fig 2.2 shows the reading of the same vernier calliper used to measure the thickness of a book. Fig. 2.1 Fig. 2.2 What is the thickness of the book? A 0.59 cm B 0.77 cm C 0.79 cm D 0.89 cm 3 An object is propelled vertically upward with an initial velocity of 40 m/s. Ignoring air resistance, what is the velocity of the object 5.0 s later? A - 40 m/s B - 10 m/s C 8.0 m/s D 10 m/s 4 The table below describes the motion of an object travelling from P to R. distance / m time taken / s P to Q 3.0 3.0 Q to R 4.0 6.0 What is the average velocity of the object over the period of 9.0 s? A 0.56 m/s B 0.78 m/s C 1.0 m/s D 5.0 m/s P Q R

3 5 The graph shows how the height of a skydiver changes with time after he jumped from a plane. Which of the following statements best describes the motion of the skydiver? A From A to B the skydiver is undergoing acceleration. B From B to C the skydiver is undergoing decreasing deceleration C The speed of the skydiver is decreasing throughout the whole 80 s duration. D The skydiver fell through a distance of 12 500 m while travelling at constant speed. 6 An object was pulled up the slope with a constant force. The object moves up with a constant velocity of 5.0 cm/s. Which of the following statement s correctly explain why the object moves at a constant velocity of 5.0 cm/s? A The pulling force on the object is equal to