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A body moves in a straight line along Y-...

A body moves in a straight line along Y-axis. Its distance y in metre) from the origin is given `y = 8t -3t^(2).` The average speed in the time interval from `t =0` second to `t =1` second is

A

`2m//s`

B

`-16m//s`

C

`-4m//s`

D

`5m//s`

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The correct Answer is:
C
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