Understanding, representing and using vectors

Which of the following is always positive?

• vector
• scalar
• direction
• magnitude

What is the magnitude of the vector <-2, 8>?

Given points A(2, 1) and B(-4, 1). Explain why the vector AB is parallel to the x-axis.

• because vector AB has component vector j = 0

• because vector AB has component vector i = 0

• because vector AB is a multiple of the unit vector k

Vectors are equivalent if they have the same magnitude and direction. Which are equivalent vectors?

• u and -u

• u and a

• u and v

• u and b

What is the magnitude of a vector?

• Length

• Starting point

• Head

• Angle

True or false.  -u has the same magnitude as u but travels in the exact opposite direction.

• True
• False

Find the magnitude of the vector.
-9i - 40j

• 40
• 2 radical 533
• 9
• 41

What are the components of a vector?

• Area and perimeter

• Length and speed

• Width and height

• Magnitude and direction

Tags

vector

Find the magnitude given a vector with initial point at (7, -6)

and terminal point at (8, -3).

Another name for the "tip" of the vector

• Terminal point

• Initial point

• Standard position

• Direction