Free Printable THEORY ASSIGNMENT 1 DUM20132 MAY-OCT 2021 (UNIT 2

1.

A scalar quantity has ...

a)

direction only

b)

magnitude only

c)

magnitude and direction

2.

What is the resultant of the two vectors shown above?

a)

+5

b)

-5

c)

+15

d)

-15

3.

Which vector has these components?

(2, 3)

a)

b)

c)

d)

4.

Which vector equation matches the vector operation shown in the diagram below?

a)

u - v = w

b)

u - v = - w

c)

u + v = w

d)

v + u = - w

5.

Calculate a + b

a)

b)

c)

d)

6.

The subtraction

\left(\overrightarrow{A}-\overrightarrow{B}\right)

of the following vectors $\overrightarrow{A}=\left(15,\ 3,\ 2\right)\ \ \ and\ \ \ \overrightarrow{B}=\left(-5,\ 2,\ -9\right)$ is...

a)

$\overrightarrow{R}=\left(10,5,-7\right)$

b)

$\overrightarrow{R}=\left(20,5,-7\right)$

c)

$\overrightarrow{R}=\left(20,1,11\right)$

d)

$\overrightarrow{R}=\left(10,1,11\right)$

7.

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

a)

3i + 3j - 3k

b)

5i + 6j - 8k

c)

6i + 9j -15k

d)

6i + 6j - 15k

8.

Given the vector v = 3i -2j +6 k, the magnitude of a is:

a)

36

b)

49

c)

7

d)

6

9.

Find the angle between vectors (1,3) and (2,-5).

a)

40.2°

b)

49.7°

c)

139.7°

d)

92.6°

10.

Find the cross product u x v if

u = < 2, 0, 1 > and v = < 0, 0 , -1 >.

a)

2

b)

< 0, 2, 0 >

c)

-2

d)

< 0, -2, 0 >

THEORY ASSIGNMENT 1 DUM20132 MAY-OCT 2021 (UNIT 2 - SET 1)

Total questions: 10

Worksheet time: 15mins

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