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A particle moves along a vertical line (up is the positive direction) so that its position at time t is given by s(t) = 16t − t3, t ≥ 0 (a) At what time(s) does the particle stop? (b) Is the particle speeding up or slowing down at t = 1? t = 3?

A particle moves along a vertical line (up is the positive direction) so that its position at time t is given by s(t) = 16t − t3, t ≥ 0 (a) At what time(s) does the particle stop? (b) Is the particle speeding up or slowing down at t = 1? t = 3?

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A particle moves along a vertical line (up is the positive direction) so that its position at time t is given by
s ( t ) = 16 t − t 3 , t ≥ 0
(a) At what time(s) does the particle stop? (b) Is the particle speeding up or slowing down at t = 1 ? t = 3 ?

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