AQA A Level Computer Science Paper 1 2023

COMPUTER SCIENCE Paper 1 Time allowed: 2 hours 30 minutes For this paper you must have: • a computer • appropriate software • an electronic version and a hard copy of the Skeleton Program You must not use a calculator. • Type the information required on the front of your Electronic Answer Document. Candidate Number are shown clearly in the footer of every page (also at the top of the front cover) of your Electronic Answer Document. • Answer all questions. • The marks for questions are shown in brackets. • The maximum mark for this paper is 100. • The question paper is divided into four sections. You are advised to allocate time to each section as follows: Tie together all your printed Electronic Answer Document pages and hand them to the Invigilator. It may not be possible to issue a result for this paper if your details are not on every page of your Electronic Answer Document. IB/G/Jun20/E15 7517/1 2 Section A You are advised to spend no longer than 45 minutes on this section. Type your answers to Section A in your Electronic Answer Document. You must save this document at regular intervals. 0 1 Figure 1 shows two vectors a and b and the angle between them, . Figure 1 a = [4, 3] magnitude of vector a is 5 because �4 +3 0 1 . 1 What is the magnitude of vector b? [1 mark] 0 1 . 2 Calculate the dot product of vectors a and b. You should show your working. IB/G/Jun20/7517/1 3 The angle between two vectors cannot be larger than 180 . If the angle is measured as being greater than 180 then this angle is subtracted from 360 to find the actual Example: if an angle between two vectors represented as arrows is measured as being 240 then the angle between the two vectors is 360 – 240 = 120 0 1 . 3 Describe what will happen to the angle and the magnitude of vector a when vector [2 marks] 0 1 . 4 Describe what will happen to the angle and the magnitude of vector a when vector [2 marks] Turn over for the next question