Given s(t) = 3t+ 6, where s(t) is in miles and t is in hours, find each of the following. a) v(t) b) a(t) c) The velocity and acceleration when t = 2 hr d) When the distance function is given by a linear function, there is uniform motion. What does uniform motion mean in terms of velocity and acceleration? a) v(t) = b) a(t) = c) When t = 2 hr, the velocity is (Simplify your answer.) When t= 2 hr, the acceleration is (Simplify your answer.) d) What does uniform motion mean in terms of velocity and acceleration? Choose the correct answer below. O A. The acceleration remains constant and there is no velocity. O B. The velocity remains constant and there is no acceleration. O C. The velocity and acceleration decrease as the function increases. O D. The velocity and acceleration increase as the function increases