A body iniitially at rest is moving with...

A body iniitially at rest is moving with uniform acceleration a. Its velocity after n seconds is v. The displacement of the body in last 2 s is

`(2v (n -1))/(n)`

`(v (n -1))/(n)`

`(v (n +1))/(n)`

`(2v (2n +1))/(n)`

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