Given 2 vectors $bbA = 4bbi + 3bbj$ and $bbB =5bbi - 2bbj$ how do you write an expression for the vector difference $bbA - bbB$ using unit vectors?

Question

15101 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-07-20T05:30:03

The answer is $=-hati+5hatj$

The $2$ vectors are

$vecA=4hati+3hatj$

and

$vecB=5hati-2hatj$

Then,

$vecA-vecB=(4hati+3hatj)-(5hati-2hatj)$

$=(4-5)hati+(3+2)hatj$

$=-hati+5hatj$

Given 2 vectors bbA = 4bbi + 3bbj bbA = 4bbi + 3bbj and bbB =5bbi - 2bbjbbB =5bbi - 2bbj how do you write an expression for the vector difference bbA - bbBbbA - bbB using unit vectors?