# Chapter-3: Motion in a Straight Line

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

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

2. The SI unit of acceleration is –

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

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

• Displacement
• Acceleration
• Velocity
• None of these
Acceleration

4. The rate of change of displacement –

• Speed
• Acceleration
• Velocity
• Distance
Velocity

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

• Initial velocity
• Final velocity
• Change in velocity
• distance traveled.
Final 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
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
40 m/s

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

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

9. Odometer measures –

• Speed
• Distance
• Time
• Average speed
Distance

10. Negative acceleration is called –

• Uniform acceleration
• Variable acceleration
• Retardation
• Acceleration
Retardation

11. Area under Speed – Time graph represents –

• Distance
• Average acceleration
• Acceleration
• None of these
Distance

12. Area under the force-displacement curve represents –

• Velocity
• Acceleration
• Impulse
• Workdone
Workdone

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

• will be increasing
• will be decreasing
• will be uniform
• will increase first and decrease afterward
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
uniform acceleration

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

• Kinetic energy
• Velocity
• Momentum
• Acceleration
Acceleration

16. In circular motion –

• The direction of motion is fixed
• The direction of motion changes continuously
• Acceleration is zero
• None of these
The direction of motion changes continuously ### 5 thoughts on “Chapter-3: Motion in a Straight Line”

1. Thanks ☺️

• Thanks for the feedback!!

2. In question 4 , I think answer will be Velocity

• 3. 