Vector Review

A quantity that has both magnitude and direction is called a scalar quantity.

• True
• False

Wind velocity can be represented as a vector quantity.

• True
• False

When velocity is represented as a vector _____. 

• the length of the arrow represents the speed
• the length of the arrow is drawn to a suitable scale
• the direction of the arrow shows the direction of motion
• all of these answers

Find the direction of vector <0, 4>.

• 180⁰
• 90⁰
• 270⁰
• 0⁰

Find the direction of vector <6,5>.

• 219⁰
• 39⁰
• 129⁰
• 309⁰

Find the component form of AB with initial point A(1, -3) and terminal point B(1, 3)

• <2, 0>
• <0, 6>
• 2i
• 6j

If w = <2, -5> and y = <2, 0>, find 2w + y.

• <-10, 2>
• <4, -5>
• <-6, 10>
• <6, -10>

Find the magnitude of AB if the initial point is (-3, 1) and the terminal point is (3, 9).

• 6
• 8.2
• 10
• 10.4

Find the magnitude of the vector <-4, -6>.

• 7.211
• 52
• 3.162
• 4.472

If the dot product of two vectors are equal to zero, then what do we know about the two vectors?

• They are parallel.
• They are orthogonal.
• They are neither.