PHS 2024 4Exp PP Prelim P2 (Shared)

1 [Turn over Name:....................................... Register/Index Number: ............... Class: .............. PRESBYTERIAN HIGH SCHOOL PHYSICS 6091/2 Paper 2 22 August 2024 Thursday 1 hour 45 minutes PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL 2024 SECONDARY FOUR EXPRESS PRELIMINARY EXAMINATION INSTRUCTIONS TO CANDIDATES DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO Write your class, register number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glues or correction fluid. Section A Answer all questions in the spaces provided. Section B Answer one question in this section. The number of marks is given in brackets [ ] at the end of each question or part question. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner. This document consists of 28 printed pages. For Examiner’s Use Section A Section B Total

2 [Turn over Section A Answer all the questions in the spaces provided. 1 Fig. 1.1 shows a cricket ball as it comes into contact with a cricket bat. The cricket ball has a mass of 0.16 kg and it hits the bat with a speed of 25 m/s. After being in contact with the bat for 0.013 s, the ball rebounds with a speed of 22 m/s in the direction exactly opposite to its original direction. (a) State one difference between speed and velocity. ……………………………………………………………………………………………… ……………………………………………………………………………………………… ………………………………………………………………………………………….. [1] (b) Calculate the acceleration experienced by the cricket ball when it is struck by the bat. acceleration = ……………… [2] Fig. 1.1

3 [Turn over (c) Hence, determine the resultant force exerted on the ball by the bat. resultant force = ……………… [1]

4 [Turn over 2 Fig. 2.1 shows a uniform rectangular concrete slab that is 4.0 m in length, 3.0 m in width and 0.10 m in thickness. It rests on a brick wall and is the roof of a bus shelter. The density of the concrete slab is 1750 kg/m3.