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Science Library Quiz

Vector basics

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: What is the vector for this displacement? Vector question





Question 2: What is the parametric equation for this vector? Vector question




Question 3:
${QR}↖{→}$ = 3a - 2b
What is $-3{QR}↖{→}$?




Question 4: ${QR}↖{→}$ = 3a + 2b
${RS}↖{→}$ = 2a - 4b
What is $3{QR}↖{→}$ + $2{RS}↖{→}$?




Question 5:
${QR}↖{→}$ = 2a - b and ${RS}↖{→}$ = a - 3b
What is ${SQ}↖{→}$?




Question 6:
${DE}↖{→}$ = $(table 3;-1)$ and ${EF}↖{→}$ = $(table 3;5)$

What is ${FD}↖{→}$ as a column vector?




Question 7: A ship sails at a bearing of 100° at 30 km/h. How far south, relative to its starting position, is the ship after 6 hours?




Question 8: An aeroplane flies at a bearing of 240° at 640 km/h. How far west, relative to its starting position, is the plane after 2 hours?




Question 9: A aeroplane flies at 500km/h on a compass bearing of 90°, while there is a 50km/h north wind. What is the plane's position after 1.5 hours?




Question 10: What is the length of the vector ${AB}↖{→}$ = 5i + 6j




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