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1 / 9

Time

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Unit Vectors

The unit vector in the opposite direction to ⟨0,−1⟩ is:

⟨0,1⟩

⟨0,−1⟩

⟨0,−2⟩

In two-dimensional space, what are the unit vectors for the x and y directions, respectively?

i,j

x,y

0 Which of the following vectors is a unit vector?

⟨3,4⟩

⟨0,1⟩

⟨0,2⟩

What is the magnitude of a unit vector?

0

1

2 What is the notation for the unit vector in the positive x-direction?

i

j

l

Which of the following is always a unit vector?

0

1

3 What is the unit vector in the negative y-direction?

i

-j

j

If V is a vector, what is the unit vector in the same direction as V?

0 V/(||V||)

1 In three-dimensional space, a unit vector along the positive z-axis is denoted by:

i

k

r

Questions

Time

Score

Unit Vectors

The unit vector in the opposite direction to ⟨0,−1⟩ is:

⟨0,1⟩

⟨0,−1⟩

⟨0,−2⟩

In two-dimensional space, what are the unit vectors for the x and y directions, respectively?

i,j

x,y

0

Which of the following vectors is a unit vector?

⟨3,4⟩

⟨0,1⟩

⟨0,2⟩

What is the magnitude of a unit vector?

0

1

2

What is the notation for the unit vector in the positive x-direction?

i

j

l

Which of the following is always a unit vector?

0

1

3

What is the unit vector in the negative y-direction?

i

-j

j

If V is a vector, what is the unit vector in the same direction as V?

0

V/(||V||)

1

In three-dimensional space, a unit vector along the positive z-axis is denoted by:

i

k

r

Incorrect

Great!