Vectors

Vector is a quantity with:

• magnitude and direction

• magnitude

• direction

• none of the above

With a vector, what kind of information is carried by the positive and negative signs?

• the direction

• the size

• the math function

• the coordinates

What is the "magnitude" of a vector?

• the units of the vector show magnitude

• the sign of the vector shows magnitude

• the length of the vector shows magnitude

• the direction of the vector shows magnitude

Which are equivalent vectors?

• u and -u

• u and a

• u and v

• u and b

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 magnitude of the vector <2, -3>.

• √11
• 13
• √-4
• √13

Find the direction of the vector <-3, -5>.

• 59.03°
• 239.03°
• 210.96°
• 120.96°

What is the sum of a vector addition problem called?

• components

• scalar

• resultant

• magnitude

Given u = <3, 7> and v =<-5, 4>, find 2v - 3u

• <21, 2>
• <-19, -13>
• <-15, 3>
• 23

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

• 1
• <3, -4>
• <4, 0>
• -1