A body can have zero average velocity but not zero average speed.explain?
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A body can have zero average velocity but not zero average speed because velocity is displacement / time and speed is distance / time. An object can have zero displacement but not zero distance . Therefore a body can have zero average velocity but not zero average speed.
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Average velocity is defined as the ratio of total displacement by TOTAL time taken.
Average speed is the ratio of total distance by TOTAL time taken.
As average velocity depends on displacement and displacement can be zero if the object returns to initial position .
Where as distance can never be zero for a journey.
Example:
A person completes one revolution in circular path.
Distance = 2 *pi*r
Whereas displacement is zero as source and destination is same.Hence A body can have zero average velocity but not zero average speed.
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Average speed is the ratio of total distance by TOTAL time taken.
As average velocity depends on displacement and displacement can be zero if the object returns to initial position .
Where as distance can never be zero for a journey.
Example:
A person completes one revolution in circular path.
Distance = 2 *pi*r
Whereas displacement is zero as source and destination is same.Hence A body can have zero average velocity but not zero average speed.
hopw this help u mark me brainliest
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