O Tangent Lines and Velocity: Mastery Test Su Select the correct answer. The displacement of a train starting from a stop is given by the equation s(t) - 8vt + 1meters. Estimate the instantaneous velocity of the train at t= 9 seconds by considering the average velocities over the intervals [8.5, 9], [8.7, 9]. [8.9, 9]. [8.99, 9], [9, 9.01]. [9, 9.1], [9, 9.3], and [9, 9.5]. O A. 1.00 m/sec. O B. 1.33 m/sec. O C. 2.10 m/sec. O D. 2.33 m/sec. Undo Next