Given s(t) = 5t + 20, 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 velocity remains constant and there is no acceleration. O B. The velocity and acceleration increase as the function increases