InterviewSolution
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InterviewSolution
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A body can have zero average velocity but not zero average speed. Justify |
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Answer» Velocity has both magnitude and direction while speed only has magnitude.Hence average velocity can be zero if a body travels to point \'A\' and back to the origin, displacement is 0 so average velocity is also 0.However, if the body travels the same distance to and fro the distance has some value "k". So no matter the time taken, the average speed will have some value but will never be 0.\xa0 Average velocity = Net displacement / time takenAverage speed = total distance / time takenNet displacement can be zero but total distance can not be zero .So, average velocity can be zero but average speed can not be zero . |
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