A body can have zero average velocity but not zero average speed . Why ?
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Average velocity = Displacement / Time
Average speed = Distance / Time
A moving body can have zero displacement but it can’t have zero distance.
∴ It can have zero average velocity but can’t have zero average speed.
Average speed = Distance / Time
A moving body can have zero displacement but it can’t have zero distance.
∴ It can have zero average velocity but can’t have zero average speed.
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