11 vectors Flashcards
What is a vector?
Something with a size and a magnitude.
What does it mean if a letter has a squiqily line beneath it?
It is a vector.
What does it mean if a vector is a scalar multiple of another vector?
They are parallel.
What is a unit vector?
A vector with length 1 unit.
What are ij vectors?
A way of writing vectors
I is 1 unit across
J is 1 unit up or down
What is it asking if a vector symbol is wrote with straight lines either side of it?
They are asking to find the length of the vector.
What is the direction of a vector
the angle it meets the x axis at.
What is a position vector?
The vector that takes you from the origin to a point.
How to find the position vector of 2 points?
Choose a point and find the vector back to the origin, then go from the origin to the next point.
