4. (1 pt) Let s = 40/(t2+24) be the position function of a particle

moving along a coordinate line, where s is in feet and t is in

seconds.

(a) Find the maximum speed of the particle for t 0. If appropriate,

leave your answer in radical form.

Speed (ft/sec) :

(b) Find the direction of the particle when it has its maximum

moving along a coordinate line, where s is in feet and t is in

seconds.

(a) Find the maximum speed of the particle for t 0. If appropriate,

leave your answer in radical form.

Speed (ft/sec) :

(b) Find the direction of the particle when it has its maximum

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