Vectors Basics Flashcards
Define vector
quantity that is determined by its magnitude and direction
what is the magnitude of a vector
its length
what is a scalar
a number
what is a zero vector
a vector whos magnitude is 0 and who’s direction is undefined
how do we show a vector is a vector when handwriting
underline (or arrow above)
how do we show a vectors magnitude in handwriting
with a line either side ||
two vectors are equal when
they have the same magnitude and direction
what is the negative of a vector
same magnitude but different direction
how do we show a negative vector in handwriting
minus sign before the vector
if you multiply a vector by a positive scalar does its direction change
no
if you multiply a vector by a negative scalar does its direction change
Yes, goes in opposite direction
if you multiply a vector by 0, does its direction change
no, it becomes 0
what is a displacement vector
the vector which goes from one point on a plane to another
What is the x component of a vector
the change in x
what is the y component of a vector
the change in y
how to show vector addition on paper
parallelogram
how to show vector addition on paper
triangle rule
will multiplying a vector by a scalar change its magnitude
yes
vectors with magnitude of 1 are called
unit vectors
what can i represent
x component
what can j represent
y component
show the vector p in component form
pi + pj, (pi, pj)
how are vectors in a 2D and 3D plane equal
when their corresponding components are equal
too add vectors what do we do
add their corresponding components
