8. The position of a vehicle moving on a straight track along the x-axis is given by the equation x(t) = P + 3t+ 5, where x is in meters and t is in seconds. What is its acceleration at time t = 5 s? A) Zero B) 2 m/s2 C) 5 m/s2 D) 10 m/s2 E) 13 m/s2 along the w-axis is​