Chapter 6

Question 1

What is a vector

Answer 1

A quantity that has both magnitude or distance and direction

Question 2

Scalar vectors

Answer 2

only have magnitude and are used with vector quantities

Question 3

opposite vector

Answer 3

same magnitude but different direction

Question 4

Displacement Vectors

Answer 4

the final position of a vector after a series of movements

Question 5

Magnitude Formula

Answer 5

IaI = sqrt(x^2+y^2)

Question 6

Unit vector

Answer 6

points in the direction of a vector but has a magnitude of 1

U = < a/ IvI …>

IvI = sqrt(a^2+b^2+c^2)

Question 7

example of finding unit vector

Answer 7

v = <-1,-3,-4>

do it on paper

Question 8

Normal vectors

Answer 8

Perpendicular to another vector (infinite number of them)

a x b = IaI IbI cos theta

a x b = 0

Question 9

Dot product

Answer 9

<a1,a2,a3> <b1,b2,b3>

a1Xb1. + a2Xb2. …..

For angles

a.b = IaI IbI cos(theta)