Vectors Review (BAD)

 $a=3i-6j$  
 $\ b=10i-9j$  
 $\ c=-12i+14j$  
What is  $-a+2b-\frac{1}{2}c$  

•  $i-j$  

•  $23i-19j$  

•  $-6i+21j$  

•  $23i-5j$  

•  $-6i-19j$  

$a=3i-6j$
 $\ b=10i-8j$ 
$\ c=-12i+14j$
What is  $2a-\frac{1}{2}b-3c$ 

•  $37i-57j$ 

•  $37i-50j$ 

•  $44i-50j$ 

• $23i-5j$

•  $i$ 

Vector $v$ has magnitude 25.0 and direction angle 18.2°. Find the horizontal and vertical components. Write the answer in  $<a,\ b>$   form.

•  $<23.75,\ 7.81>$  

•  $<7.81,\ 23.75>$  

•  $<16.49,\ 7.69>$  

•  $<8.49,\ 8.49$  

•  $<-7.81,\ -23.75>$  

Tags

CCSS.HSN.VM.A.2

Find the magnitude for $v$ =⟨6, −2⟩

•  $40$  

•  $\sqrt{40}$  

•  $32$  

•  $\sqrt{32}$  

•  $-\sqrt{40}$  

Tags

CCSS.HSN.VM.A.1

Find the direction angle for $v$ =⟨8, −3⟩

•  $-69.44\degree$  

•  $290.56\degree$  

•  $-20.56$  

•  $339.44\degree$  

•  $20.56$  

Tags

CCSS.HSN.VM.A.1

$a=3i-6j$
 $\ b=10i-8j$ 
$\ c=-12i+14j$
What is  $\left|a\right|$ ?

•  $\sqrt{45}$  

•  $3\sqrt{5}$  

•  $3\sqrt{3}$  

•  $2\sqrt{85}$  

•  $\sqrt{27}$  

Tags

CCSS.HSN.VM.A.1

$a=3i-6j$
 $\ b=10i-8j$ 
$\ c=-12i+14j$
What is  $a\ \cdot\ b$ 

• -18

• 78

• 1440

• -78

• 18

Parallel, Orthogonal, or Neither?
 $u=<-5,\ 8>$ ,  $v=<16,\ 10>$  

• Parallel

• Perpenicular

• Neither

Parallel, Orthogonal, or Neither?
 $u=<-8,\ 9>$ ,  $v=<-9,\ 8>$  

• Parallel

• Perpendicular

• Neither

 Find the vector $w$ in the xy plane with magnitude 10 if the angle between $w$ and positive x-axis is 330°.

•  $<8.66,\ -5>$  

•  $<-5,\ 8.66>$  

•  $<5,\ -8.66>$  

•  $<5.77,\ -5.77>$  

•  $<9.91,\ -1.32>$  

Tags

CCSS.HSN.VM.A.2