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A particle moving along x-axis has accel...

A particle moving along x-axis has acceleration `f`, at time `t`, given by `f = f_0 (1 - (t)/(T))`, where `f_0` and `T` are constant.
The particle at `t = 0` has zero velocity. In the time interval between `t = 0` and the instant when `f = 0`, the particle's velocity `(v_x)` is :

A

`frac(1)(2)f_0T^2`

B

`f_0 T^2`.

C

`frac(1)(2)f_0T`

D

`f_0T`

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