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41. Multiple choice question XXXXI

A body goes from

$A$ to

$B$ with a velocity of

$20\ ms^{-1}$ and comes back B to A with a velocity of

$30\ ms^{-1}$ . The average velocity of the body during the whole journey is

$zero$
$24\ ms^{-1}$
$25\ ms^{-1}$
$30\ ms^{-1}$

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