seeing:
A(4,0) B(2,1)
find a unit vector in the direction of AB ( smal arrow above AB that begins from left to right) abd a vector of magnitude 3 in the opposite direction
thank you
seeing:
A(4,0) B(2,1)
find a unit vector in the direction of AB ( smal arrow above AB that begins from left to right) abd a vector of magnitude 3 in the opposite direction
thank you
A unit vector is simply a vector with a magnitude of 1. To get the unit vector in the direction of the vector , all you have to do is divide the components of the vector by its magnitude. This process is called normalization.
Magnitude of
Unit vector in the direction of
To find the vector of magnitude 3 in the opposite direction of the vector , you have to find the unit vector in the direction of , which is in the opposite direction. Since the unit vector has a magnitude of 1, and you need a vector of magnitude 3, just multiply the unit vector by 3, and you'll get the answer.