Chapter 10- Vectors (Pure Maths) Flashcards
1
Q
what are scalar quantities?
A
scalar quantities have no direction- e.g a speed
2
Q
what are vector quantities?
A
vector quantities have a direction
3
Q
how are vector from point a to point b written?
A
–→
AB
4
Q
what does collinear mean?
A
collinear means they all lie on the same straight line
5
Q
how does scalar multiplication work?
A
when you multiply a vector by a scalar the direction doesn’t change but the length/magnitude does. All paralell vectors are scalar multiples are each other
6
Q
what is the i unit vector?
A
i is in the direction of the positive x-axis.
7
Q
what is the j unit vector?
A
j is in the direction of the positive Y-axis.
