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9.3 Vectors

Total questions: 10

Worksheet time: 3hrs 30mins

Name
Class
Date
1.

Find the magnitude of vector v. v = <5, 12>

a)

||v|| = 12

b)

||v|| = 13

c)

||v|| = 14.5

d)

||v|| = 15

2.

Find the component form of the vector v that initial point P(6, 1) and terminal point Q(3, 8).

a)

v = <-2, 1>

b)

v = <3, -7>

c)

v = <9, 9>

d)

v = <-3, 7>

3.

If P = (-4, 8) and Q = (x, -12), find all numbers x such that the vector represented PQ has length -29.

a)

x = {17, -25}

b)

x = {-17, 25}

c)

x = {16, 24}

d)

x = {-16, 24}

4.

If P = (5, 7) and Q = (x, 42), find all numbers x such that the vector represented PQ has length 37.

a)

x = {-17, 7}

b)

x = {17, -7}

c)

x = {12, 7}

d)

x = {-7, 12}

5.

Find a unit vector having the same distance as v. v = 11i + 60j

a)

v = (11/61)i + (60/61)j

b)

v = (11/49)i + (60/49)j

c)

v = (11/12)i + (60/12)j

d)

v = (11/65)i + (60/65)j

6.

Find a unit vector having the same distance as v. v = -4i - 3j

a)

v = (-4/5)i - (3/5)j

b)

v = (4/5)i + (3/5)j

c)

v = (-4/25)i - (3/25)j

d)

v = (4/25)i + (3/25)j

7.

Let u = 10i - 2j and v = 4i - 5j. Find 3u + 2v

a)

38i - 16j

b)

22i - 4j

c)

-38i + 16j

d)

-22i + 4j

8.

Let u = -7i + 3j and v = i - 2j. Find 4u - 9v

a)

37i - 30j

b)

19i - 6j

c)

-37i + 30j

d)

-19i + 6j

9.

Let u = -i - 2j and v = 6i + 5j. Find 8u - v

a)

-14i - 21j

b)

14i - 11j

c)

2i + 21j

d)

-2i - 21j

10.

Find the magnitude of the vector v that has initial point P(2, -6) and terminal point Q(-1, 10)

a)

||v|| = 16.3

b)

||v|| = 15.7

c)

||v|| = -16.3

d)

||v|| = -15.7