Chapter-3: Motion In A Straight Line |

1. Out of the following, which cannot be negative?

- Total path length
- Velocity
- Acceleration
- None of these.

2. The SI unit of acceleration is –

- m/s
- m/s²
- cm/sec²
- None of these

3. The rate of change in velocity with time is called –

- Displacement
- Acceleration
- Velocity
- None of these

4. The rate of change of displacement –

- Speed
- Acceleration
- Velocity
- Distance

5. The area under acceleration – time graph represents the –

- Initial velocity
- Final velocity
- Change in velocity
- distance traveled.

6. Two cars A and B are running at velocities of 60 km/h and 45 km/h. What is the relative velocity of car A with respect to car B, if both are moving eastward?

- 15 km/h
- 45 km/h
- 60 km/h
- 105 km/h

7. A body starts from 20 m/s. If its acceleration is 2 m/s². then the velocity of the body after 10 seconds is –

- 40 m/s
- 20 m/s
- 30 m/s
- 10 m/s

8. What does the speedometer of a vehicle read/measure? –

- Average Speed
- Average Velocity
- Instantaneous Speed
- Instantaneous Velocity

9. Odometer measures –

- Speed
- Distance
- Time
- Average speed

10. Negative acceleration is called –

- Uniform acceleration
- Variable acceleration
- Retardation
- Acceleration

11. Area under Speed – Time graph represents –

- Distance
- Average acceleration
- Acceleration
- None of these

12. Area under the force-displacement curve represents –

- Velocity
- Acceleration
- Impulse
- Workdone

13. A body s moving with uniform acceleration. Its velocity –

- will be increasing
- will be decreasing
- will be uniform
- will increase first and decrease afterward

14. A force is acting on a body. The body will move with –

- uniform velocity
- uniform acceleration
- uniform retardation
- None of these

15. If a uniform force is acted upon a body which of the following remains constant?

- Kinetic energy
- Velocity
- Momentum
- Acceleration

16. In circular motion –

- The direction of motion is fixed
- The direction of motion changes continuously
- Acceleration is zero
- None of these