Concepts in vectors

Find the magnitude of the vector <0, -9>

• 9
• 3
• -9
• <0, 1>

Scalar quantities have

• Magnitude

• Direction

• Both magnitude and direction

• Neither magnitude nor direction

Find the direction angle and magnitude of the vector <-7, 0>

Select all that apply.

• magnitude = 7

• magnitude = -7

• 90°

• 180°

• 270°

If a vector is in Quadrant 2, the direction can be found by:

Two vectors are equal if they have the same ________ and ________. (Input as "word, word" with no upper case)

Given $A\left(-1.4,\ 0.3,\ -7.2\right)$ and $B\left(0.4,\ -9.1,\ 8.2\right)$ , find the magnitude of  $\overrightarrow{AB}$ .

• 12.33

• 8.91

• 8.80

• 18.13

Find the magnitude of a vector using ...

• Sine & Cosine
• Inverse Tangent
• Pythagorean Theorem
• Multiplication

Classify the following measures as scalar or vector.

10 km towards east

• scalar

• vector

Classify the following measures as scalars and vectors.

 2 Meters North West

• vector

• scalar

Given that u $=<5,4>$  find the magnitude of vector u.

•  $\tan\theta=\frac{4}{5}$  

•  $\tan\theta=\frac{5}{4}$  

•  $\sqrt{5^2+4^2}$  

• Must have the direction angle to solve