A particle moves along a straight line and its position at time [math] is given by [math] where s is measured in feet and t in seconds.
(A) Find the velocity (in ft/sec) of the particle at time [math]:
(B) Find all values of [math] for which the particle is at rest. (If there are no such values, enter 0. If there are more than one value, list them separated by commas.))

[math] =
(C) What is the position of the particle at time [math]?
(D) Finally, what is the TOTAL distance the particle travels between time [math] and time [math]?