CBSE Class 9 Science Describing Motion Around Us (Class 9 NCERT New) Quiz 12

1. What is the term for the change in velocity over time?

A Speed B Acceleration C Displacement D Distance

2. What is the graphical representation of distance vs. time for a body at rest?

A A vertical line B A straight line C A curve D A horizontal line

3. What is the acceleration of a body if its velocity changes from 10 m/s to 20 m/s in 5 seconds?

A 4 m/s² B 3 m/s² C 1 m/s² D 2 m/s²

4. What is the term for the distance covered by a body in a specific direction?

A Velocity B Displacement C Distance D Speed

5. What is the average speed of a body that travels 100 m in 10 seconds?

A 20 m/s B 15 m/s C 10 m/s D 5 m/s

6. What is the term for the speed of a body in a given direction?

A Speed B Displacement C Velocity D Acceleration

7. What is the formula for calculating average speed?

A Total distance/Total time B Speed × Time C Total time/Total distance D Distance/Time

8. What is the term for the motion of a body that moves back and forth?

A Circular motion B Linear motion C Uniform motion D Oscillatory motion

9. What is the term for the total path length traveled by an object regardless of direction?

A Distance B Acceleration C Velocity D Displacement

10. If a runner completes a lap of 400 m in 50 seconds, what is their average speed?

A 6 m/s B 8 m/s C 12 m/s D 10 m/s