Vectors

Vector is a quantity with:

• magnitude and direction

• magnitude

• direction

• none of the above

• 0 degrees

• 90 degrees

• 180 degrees

• 270 degrees

u + v

• 4i - j

• 6i + j

• 3j + 4j

• i + 6j

Find the direction of the vector <-2,1>.

• 63⁰
• 333⁰
• 27⁰
• 153⁰

Find the magnitude.

• 4

• 5

• 3

• square root of 5

Given an initial point A ( 2, 4 ) and terminal point B ( -8, 7 ), find the component form of the vector AB.

• 〈-10,3〉
• 〈-6,3〉
• 〈10,11〉
• 〈-6,-3〉

Find the direction angle and magnitude of the vector <-7, 0>

Select all that apply.

• magnitude = 7

• magnitude = -7

• 90°

• 180°

• 270°

Which of the following is always positive?

• vector
• scalar
• direction
• magnitude

Find the dot product of <1, -2> and <3, 2>.

• 1
• <3, -4>
• <4, 0>
• -1