Distinguish between speed and velocity.
| Speed | Velocity |
|---|---|
| The distance travelled by a moving object per unit time is called its speed. It does not have any direction. | The distance travelled by moving an object in a particular direction per unit time is called its velocity. It has a unique direction. |
|
Speed is given by the relation:
|
Velocity is given by the relation:
|
| It is a scalar quantity. | It is a vector quantity. |
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Fig. 8.11
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Fig. 8.12
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Fig. 8.12
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