Motion | Unit 2 | Class 9 | Physics | Science | Samacheer Kalvi | TNPSC
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00:00 Introduction
00:12 Choose the correct answer
03:22 Fill in the blanks
05:46 True or false
03:38 Match the following
09:06 Assertion and reason
Questions answered in this video –
1. The area under velocity time graph represents the
2. Which one of the following is most likely not a case of uniform circular motion?
3. The centrifugal force is
4. Speed is a __________ quantity whereas velocity is a _________ quantity.
5. The slope of the distance time graph at any point gives __________
6. Negative acceleration is called ________
7. Area under velocity time graph shows ____________
8. The motion of a city bus in a heavy traffic road is an example for uniform motion
9. Acceleration can get negative value also
10. Distance covered by a particle never becomes zero but displacement becomes zero.
11. The velocity time graph of a particle falling freely under gravity would be a straight line parallel to the x axis.
12. If the velocity time graph of a particle is a straight line inclined to X-axis then its displacement time graph will be a straight line
13. (A): The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them… (R): Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.
14. (A): The Speedometer of a car or a motor-cycle measures its average speed.. (R): Average velocity is equal to total displacement divided by total time taken.
15. (A): Displacement of a body may be zero when distance travelled by it is not zero… (R): The displacement is the shortest distance between initial and final position.