Precalculus Application of Vectors

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

• <21, 2>

• <-19, -13>

• <-15, 3>

• 23

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

• 2

• 12.81

• 6

• 18

Determine the direction and magnitude of the vector 〈7,18〉

• Direction 21.3°
  Magnitude 19.3

• Direction 68.7°
  Magnitude 19.3

• Direction 21.3°
  Magnitude 373

• Direction 68.7°
  Magnitude 373

Determine the direction and magnitude of the vector 〈-11,5〉

• Direction 24.4°
  Vertical 12.1

• Direction65.6°
  Magnitude 12.1

• Direction -24.4°
  Magnitude 12.1

• Direction 155.6°
  Magnitude 12.1

Calculate the horizontal component of the velocity

• 69 m/s

• 20 m/s

• 35 m/s

• 23 m/s

Aww snap, it's another vector (☞ﾟヮﾟ)☞

Find the vertical component of its velocity

• 52 m/s

• 30 m/s

• 35 m/s

• 9 m/s

How should you add two vectors? Select all that apply

• Add them head to tail

• Add them tail to tail

• don't why bother

• Use the parallelogram method

• Add them head to head

Write in component form.

• <0, 4>

• <8, 2>

• <2, 8>

• <0, 2>

Given an initial point R ( -12, 4 ) and terminal point S ( 28, -17 ), find the component form of the vector RS.

• 〈14,-13〉

• 〈-14,13〉

• 〈-40,-21〉

• 〈40,-21〉

In practice A of the figure, What is  the magnitude of the  resultant displacement?

• 5 km 

• 8 km

• 11 km

• 15 km