question_answer

The displacement of a particle is represented by the following equation: \[S=3{{t}^{3}}+7{{t}^{2}}+5t+8\] where S is in meter and t in second. The acceleration of the particle at t = 15 is

A) \[14\,\,m/{{s}^{2}}\]

B) \[18\,\,m/{{s}^{2}}\]

C) \[32\,\,m/{{s}^{2}}\]          

D) Zero