12 Questions

The following questions cover the content in Kinematics 5 (K5).

Questions and Answers

- 1.If the top vector { 6 i (m/s) } is accurately drawn, then which of the four vectors below it is also accurately drawn?
- A.
A

- B.
B

- C.
C

- D.
D

- 2.What is the sum of A and B?
- A.
C

- B.
D

- C.
E

- D.
F

- E.
G

- F.
H

- 3.What is the magnitude of vector A?
- A.
4 j (m)

- B.
J

- C.
4 (m)

- D.
90°

- 4.A = 5 i (m)B = 3 i + 3 j (m)The magnitude of A+B is _____________ (m).
- A.
11

- B.
5

- C.
8.54

- D.
5.84

- 5.D = -10 i + 4 j (m/s)In what direction does D point?
- A.
21.8° north of east

- B.
21.8° north of west

- C.
68.2° north of east

- D.
68.2° north of west

- 6.E = 10 (m), direction unknownF = 6 (m), direction unknownWhat is the smallest possible magnitude of E + F?
- A.
4 (m)

- B.
6 (m)

- C.
10 (m)

- D.
11.7 (m)

- E.
16 (m)

- 7.C = 5 j (m/s)D = -10 i (m/s)E = 2 i + 6 j (m/s)What is the magnitude of: E + D + 3C = _________ (m/s)(Give me the length of the resultant vector, to the TENTHS place.)
- 8.What is the direction of vector A+B?(State your answer to the tenths place in the following format: "26.2 degrees north of west" or "15.0 degrees south of west" or "42.8 degrees west of south", but don't include the quotation marks.)
- 9.Three vectors and their sum are depicted here. Which vector is the sum?
- A.
The green one

- B.
The red one

- C.
The blue one

- D.
The purple one

- 10.What is the direction of the resultant vector?(State your answer to the tenths place in the following format: "26.2 degrees north of west" or "15.0 degrees south of west" or "42.8 degrees west of south", but don't include the quotation marks.)
- 11.While these vectors cannot be added, they can be used to determine whether the object to which they pertain is speeding up or slowing down. Which is it?
- A.
Speeding up

- B.
Slowing down

- 12.A person, following a treasure map, makes 5 distinct displacements. What is the
*magnitude*of the person's*overall*displacement (i.e. the vector sum of the 5 displacements)?(State your answer to the nearest whole number of meters. Only put the magnitude, not the direction. And omit units.)