A particle moving along a straight line OX.At a time (in second ) the distance x (in metre) of the particle from O is given by x=40+12 t-t³.How long would the particle travel before coming to rest?

Options

(a) 24 m
(b) 40 m
(c) 56 m
(d) 16 m

Correct Answer:

56 m

Explanation:

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