Magnitude and Direction of Scaled Vectors
Precalculus · Flashcards
PRECALCULUS · FLASHCARDS
Card 1
of 39
0 got it
0 to review
Current
Got it
Still learning
Not seen
QUESTION
Find
∥
1
2
v
∥
\|\frac{1}{2}\mathbf{v}\|
∥
2
1
v
∥
if
∥
v
∥
=
18
\|\mathbf{v}\|=18
∥
v
∥
=
18
.
QUESTION
What is the direction of
c
v
⃗
c\vec{v}
c
v
relative to
v
⃗
\vec{v}
v
when
c
<
0
c<0
c
<
0
and
v
⃗
≠
0
⃗
\vec{v}\neq\vec{0}
v
=
0
?
QUESTION
Find
∥
3
v
⃗
∥
\|3\vec{v}\|
∥3
v
∥
if
∥
v
⃗
∥
=
5
2
\|\vec{v}\|=\frac{5}{2}
∥
v
∥
=
2
5
.
Tap to flip before you grade
ANSWER
∥
3
v
⃗
∥
=
15
2
\|3\vec{v}\|=\frac{15}{2}
∥3
v
∥
=
2
15
. Use
∥
c
v
⃗
∥
=
∣
c
∣
∥
v
⃗
∥
=
3
⋅
5
2
\|c\vec{v}\|=|c|\|\vec{v}\|=3\cdot\frac{5}{2}
∥
c
v
∥
=
∣
c
∣∥
v
∥
=
3
⋅
2
5
.
Swipe → got it · swipe ← still learning
Got it
Still learning
Flip Card
Previous card
Next card