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The velocity of an object moving in stra...

The velocity of an object moving in straight line path is given as a function of time by `v = 6t - 3t^2`, where v is in `ms^-1`, t is in s. The average velocity of the object between `t=0` and `t=2` second is

A

0

B

`3 ms^-1`

C

`2 ms^-1`

D

`4 ms^-1`

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