AnswersNC-Math 4 CRVector Addition and Subtraction

Vector Addition and Subtraction Answers

15 verified answers2 views
1
Free Preview

Choose the expression that produces the following resultant vectors.

Answers:
6i + 9j =:2a + b – 3c
2j =:d – 4a – 2b
–8i + 13j =:5(a – c) + 3(b – d)
–10i – 7j =:c + 2(a – d) + b
3

2a + b – 3cc + 2(a – d) + bd – 4a – 2b ✔ 5(a – c) + 3(b – d)

A
2a + b – 3c
B
c + 2(a – d) + b
C
d – 4a – 2b
D
5(a – c) + 3(b – d)
4

2a + b – 3c✔ c + 2(a – d) + bd – 4a – 2b 5(a – c) + 3(b – d)

A
2a + b – 3c
B
c + 2(a – d) + b
C
d – 4a – 2b
D
5(a – c) + 3(b – d)
171205

[___], [___]

Answer:

-1, 5

171207

Check all expressions whose sum represents the same vector as (r + s) + t.

A
Option
B
Option
C
Option
D
Option
E
Option
171208

What is the magnitude and direction angle of vector c?

A
|c| = 5, θ = 36.9°
B
|c| = 5, θ = 53.1°
C
|c| = 25, θ = 16.3°
D
|c| = 25, θ = 73.7°
171209

What is the magnitude of vector w, if w = u – v?

A
|w| = 2.77
B
|w| = 2.95
C
|w| = 3.58
D
|w| = 5.60
171210

What is the y-component of vector v?

A
y = –3
B
y = –4
C
y = –20
D
y = 4
171211

Choose the expression that produces the following resultant vectors.

Answers:
6i + 9j =:2a + b – 3c
2j =:d – 4a – 2b
–8i + 13j =:5(a – c) + 3(b – d)
–10i – 7j =:c + 2(a – d) + b
171213

What mistake did Fumio make?He did not distribute the 2 to both components of vector u.He added vectors v and w before distributing the –3 to their components.He subtracted vector w from vector v.He did not use the associative property correctly when rearranging the signs.

A
He did not distribute the 2 to both components of vector u.
B
He added vectors v and w before distributing the –3 to their components.
C
He subtracted vector w from vector v.
D
He did not use the associative property correctly when rearranging the signs.
171214

2a + b – 3cc + 2(a – d) + b✔ d – 4a – 2b5(a – c) + 3(b – d)

A
2a + b – 3c
B
c + 2(a – d) + b
C
d – 4a – 2b
D
5(a – c) + 3(b – d)

Did you find these answers helpful?