A particle moves along a straight line and its position at time $t$ is given by $s(t)= 2t^3 - 21 t^2 + 36 t$ where s is measured in feet and t in seconds.
(A) Find the velocity (in ft/sec) of the particle at time $t=0$:
(B) Find all values of $t$ 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.))

$t$ =
(C) What is the position of the particle at time $14$?
(D) Finally, what is the TOTAL distance the particle travels between time $0$ and time $14$?