The position of a particle along a straight line is given by s = (t^{3} - 9t^{2} + 15t) ft, where t is in seconds. Determine its maximum acceleration and maximum velocity during the time interval 0≤ t ≤10 s.

^{3} - 9t^{2} + 15t) ft, where t is in seconds. Determine its maximum acceleration and maximum velocity during the time interval 0≤ t ≤10 s.