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The position x of a particle with respec...

The position `x` of a particle with respect to time `t` along the x-axis is given by `x=9t^(2)-t^(3)` where `x` is in meter and `t` in second. What will be the position of this particle when it achieves maximum speed along the positive `x` direction

A

32m

B

54m

C

81m

D

24m

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The correct Answer is:
B
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