Chapter 11 Vectors - Year 1 Flashcards
Of you have a vector AB what is the opposite of it?
The negative of AB
If you are given a ratio what do you need to keep in mind?
That the denominator will be the 2 numbers added togehter
How do you prove that 2 vectors are parallel?
You show that they are multiples of each other
What does the “resultant” of vectors a and b mean?
The sum of vectors a and b
How do you calculate a unit vector?
What is unit vector?
A vector with a magnitude of 1
How do you work out p and q if you are told that the magnitude of a vector (pi+qj) has a magnitude of 10 and makes an angle with the x axis of sinb=3/5?
You find the magnitude in terms of p and q
Then sketch the vector in terms of p and q
Use trigonometry to create an equation linking b, p and q
Solve for b
Solve the equations simultaneously to get answers
What is a position vector?
The vector from the origin
The position vector of point A is OA
What does bisect mean?
Split into 2 equal parts
How do you do the tricky questions with vectors when there are unknowns?
You need to work it out with 2 different paths
