16.) If a particle moves along a straight line according to s(t) =- 13 312 +41 -7 , find 12' W 2 a.) the maximum and minimum velocity on Ost s 4. vit ) = s' (t ) = t 3 72 - 3#+ 4 =0 b.) the maximum and minimum acceleration on O S t s 4. t vilt) = act ) 72 -27 - 3 = ( #- 3) ( + +1) t = - 1 or 3