Understanding, representing and using vectors

Given the vector v = 3i -2j +6 k, the magnitude of a is:

• 36

• 49

• 7

• 6

same magnitude but opposite direction

Find the magnitude of the vector 10i -8j

• 2
• 2√41
• 6
• 18

10 mph

• scalar

• vector

Which of the following is a vector? (Select all that apply.)

• Acceleration

• Velocity

• Speed

• Distance

Vector have

• Magnitude

• Direction

• Both magnitude and direction

• Neither magnitude nor direction

Find the magnitude of the vector <2, -3>.

• √11
• 13
• √-4
• √13

Determine the magnitude and direction of the force vector:

 $\vec{f\ }=\left[-12,-9\right]$  

• 15 N [S53°W]

• 15 N [S37°E]

• 15 N [N53°E]

• 15 N [N37°W]

What is a scalar?

• A quantity described by direction only

• A quantity described by magnitude only

• A quantity described by both a magnitude and a direction

• A quantity with a magnitude of one

• An empty quantity