11. Vectors Flashcards
1
Q
How do you subtract a vector?
A
It is akin to adding a negative factor
2
Q
How do you represent a column vector?
What does it represent?
A
( x ) = change in the x direction
( y ) = change in the y direction
3
Q
What is a unit vector?
A
A vector of length 1
E.g i denoting changes in the x axis while j denotes changes in the y axis
4
Q
How do you calculate the magnitude of a vector?
A
|a| = root (x2 + y2)
5
Q
How do you work out a unit vector from a vector?
A
a |
6
Q
What are position vectors?
A
Vectors giving the position of a point, relative to a fixed origin
Position vector of A = OA
7
Q
What is a vector versus a scalar quantity?
A
Vector: magnitude and direction
Scalar: magnitude
