A particle moves along a straight line \( O X \). At a time \( t \) (in seconds) the distance \(... VIDEO
A particle moves along a straight line \( O X \). At a time \( t \) (in seconds) the distance \( x \) (in metres) of the particle from \( O \) is given by \( x=40+12 t-t^{3} \). How long would the particle travel before coming to rest?
(a) \( 16 \mathrm{~m} \)
(b) \( 24 \mathrm{~m} \)
(c) \( 40 \mathrm{~m} \)
(d) \( 56 \mathrm{~m} \)
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