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The position of the particle moving along Y-axis is given as
P \( y=A t 2-B t 3 \), where \( y \) is measured in metre and \( t \) in second.

W) Then, the dimensions of \( \mathrm{B} \) are
(a) \( \left[\mathrm{LT}^{-2}\right] \)
(b) \( \left[\mathrm{LT}^{-1}\right] \)
(c) \( \left[\mathrm{LT}^{-3}\right] \)
(d) \( \left[\mathrm{MLT}^{-2}\right] \)
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