Ch3: Vectors

Vector is a quantity with:

• magnitude and direction

• magnitude

• direction

• none of the above

Tags

CCSS.HSN.VM.A.1

Vectors a, b, c are defined as:

a = 2i + 5j; b = i - 3j; c = -3i - j. Answer all correct answers

• a + b = 3i + 8j

• a - b = i + 8j

• a + c = -i + 4j

• c - b = -5i + 6j

Tags

CCSS.HSN.VM.B.4

CCSS.HSN.VM.C.10

Vector a = 2i + 3j - 5k. What is the value of 3a?

• 3i + 3j - 3k

• 5i + 6j - 8k

• 6i + 9j -15k

• 6i + 6j - 15k

Tags

CCSS.HSN.VM.B.5

CCSS.HSN.VM.C.11

Find the magnitude.

• -10

• -8

• 6

• 10

A quantity that has both magnitude and direction is called a scalar quantity.

• True
• False

If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?

• 12 km
• 19 km, East
• 31 km
• 43 km, East

Find the direction of the vector <-3, -5>.

• 59.03°
• 239.03°
• 210.96°
• 120.96°

Tags

CCSS.HSN.VM.A.1

What is the magnitude of the resultant vector, r?

• 3

• 4

• 5

• 7

What is the resultant of the two vectors shown above?

• +5

• -5

• +15

• -15