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Trigonometry and Vectors

Authored by Hector Quintanilla

Science

10th - 12th Grade

Used 26+ times

Trigonometry and Vectors
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Given the following two vectors:

A= 3i+5j-2k

B= 6i+8j-2k

What is the sum of the two vectors?

10i-12j-4k

9i+13j-4k

-9i+13j+4k

none of the above

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

What is the resultant vector of vectors A and B given that Vector A is moving 30 km east and Vector B is moving 12 km west?

18 E

18 W

12 E

12 W

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Kendrick measured the floor of his storage unit, which is rectangular. It is 12 meters wide and 15 meters from one corner to the opposite corner. How long is the storage unit?

8 m

8.5 m

9 m

9.5 m

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

A pole is situated 30 m from a house. If the angle of elevation between the ground and the top of the pole is 34 degrees, what is the height of the pole?

21.25 m

16.5 m

19.63

20.24

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

For a practice drill, a fire-fighter places a 25 foot ladder to the top of the wall. If the angle formed by the vertical is 25 degrees, how far is the ladder from the base of the building?

10.57 ft

10.90 ft

-10.25 ft

9.52 ft

6.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

What is the magnitude of the resultant vector of Vectors A and B given that Vector 5 is moving 30 km east and Vector B is moving 12 km south?

32.31 SW

30.25 SE

32.31 SE

30.25 SW

7.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Given the following vectors:

A= 2i+5j-7k

B= 4i-4j+8k

C= -3i+6j+2k

Calculate the sum of the following operation: 2(A+B+C)

3i+7j+3k

-3i+7j-3k

6i+14j+6k

-6i-14j+6k

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