d) Determine the horizontal position x of the cart at t = 9.0 s if the cart is located at x = 2.0 m at t = 0. Show your work. e) On the axes below, sketch a graph of the cart's acceleration (a) as a function of time (t). Include the entire interval from t = 0 to t = 25 s. 0.8 V, (m/s) Velocity vs. Time On a Straight Horizontal Track 0.3 t(s) 10 15 20 -0.2 -0.7 -1.2