5th 6 Weeks

Vector is a quantity with:

• magnitude and direction

• magnitude

• direction

• none of the above

Find the magnitude of the vector <10, -8>

• 2
• 12.81
• 6
• 18

Look and choose the correct answer

• A

• B

• C

• D

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

• 1
• <3, -4>
• <4, 0>
• -1

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

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

How do you know if two vectors are orthogonal?

• Their sum is 0.
• The dot product is 1.
• The angle between them is 0°.
• The dot product is 0.

A vector is a mathematical structure that has both _______ and _______.

• direction, magnitude
• scope, sequence
• meat, potatoes
• scalar, vector

If c=<-5, 4> and d=<8, 0>, calculate 2c+d

• <-2, 8>
• <-2, 0>
• <6, 8>
• <6, 0>

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

• <21, 2>
• <-11, 26>
• <8, 3>
• 23

Which vector equation matches the vector operation shown in the diagram below?

• u+w=-v

• v+u=w

• w+u=v

• -v+w=2u