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A body covers one-half of its journey at...

A body covers one-half of its journey at `40 m s^-1` and the next half at `50 m s^-1`. Its average velocity is

A

`44.44 m s^-1`

B

`50 m s^-1`

C

`45 m s^-1`

D

`40 m s^-1`

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TARGET PUBLICATION-Motion in a plane-Exercise
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