Chapter-3: Motion In A Straight Line

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

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

answer
Total path length

2. The SI unit of acceleration is –

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

answer
m/s²

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

  • Displacement
  • Acceleration
  • Velocity
  • None of these

answer
Acceleration

4. The rate of change of displacement –

  • Speed
  • Acceleration
  • Velocity
  • Distance

answer
Gravitational force

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

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

answer
Change in velocity

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

answer
15 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

answer
40 m/s

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

  • Average Speed
  • Average Velocity
  • Instantaneous Speed
  • Instantaneous Velocity

answer
Instantaneous Speed

9. Odometer measures –

  • Speed
  • Distance
  • Time
  • Average speed

answer
Distance

10. Negative acceleration is called –

  • Uniform acceleration
  • Variable acceleration
  • Retardation
  • Acceleration

answer
Retardation

11. Area under Speed – Time graph represents –

  • Distance
  • Average acceleration
  • Acceleration
  • None of these

answer
Distance

12. Area under the force-displacement curve represents –

  • Velocity
  • Acceleration
  • Impulse
  • Workdone

answer
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

answer
will be increasing

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

  • uniform velocity
  • uniform acceleration
  • uniform retardation
  • None of these

answer
uniform acceleration

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

  • Kinetic energy
  • Velocity
  • Momentum
  • Acceleration

answer
Acceleration

16. In circular motion –

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

answer
The direction of motion changes continuously

Leave a Comment

Your email address will not be published. Required fields are marked *