11. The resultant of two vectors is the smallest when the angle between them is

- 90 degree
- 45 degree
- 180 degree
- 0 degree

12. Three forces, each having a magnitude of 30 N, pull on an object in directions that are 120^{o} apart from each other. Make a statement concerning the resultant force.

- The resultant force is zero.
- The resultant force is greater than 30 N.
- The resultant force is less than 30 N.
- The resultant force is equal to 30 N.

13. Two displacement vectors have magnitudes of 5.0 m and 7.0 m, respectively. When these two vectors are added, the magnitude of the sum

- is 12 m.
- could be as small as 2.0 m, or as large as 12 m.
- is 2.0 m.
- is larger than 12 m.

14. Two vectors, of magnitudes 20 and 50, are added. Which one of the following is a possible answer for the magnitude of the resultant?

- 80
- 10
- 40
- 20

15. Which of the following is an accurate statement?

- The magnitude of a vector can be less than the magnitude of one of its components.
- The magnitude of a vector can be positive or negative.
- A vector cannot have zero magnitude if one of its components is not zero.
- If the magnitude of vector A is less than the magnitude of vector B, then the x-component of A is less than the x-component of B.

16. Which of the following operations will not change a vector?

- Translate it parallel to itself.
- Add a constant vector to it.
- Multiply it by a constant factor.
- Rotate it.

17. Which one of the following is an example of a vector quantity?

- mass
- distance
- area
- velocity

18. Which of the following relations is correct?

- Speed = Distance x Time
- Speed = Distance / Time
- Speed = Time / Distance
- Speed = 1 / Distance x Time

19. The basic unit of speed is:

- km/min
- m/min
- km/h
- m/s

20. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is:

- 100 km
- 25 km
- 15 km
- 10 km

MCQ Multiple Choice Questions and Answers on Motion and Time

Motion and Time Question and Answer