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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  1998
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Q)

If $x = 3 – 4t^{2} + t^{3},$ then work done in first $4s$. will be (Mass of the particle is 3 gram) :


( A ) 192 mJ
( B ) 384 mJ
( C ) None of these
( D ) 168 mJ

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