The displacement of a point on a moving body was measured in each frame of a motion-pcture film. The displacements determined from each successive frame measured with respect to the initial position of the body were as follows: 0.25 in., 1.5 in., 4.0 in., 9.5 in., 16.0 in., 24.5 in., and 34.5 in. The camera speed was 20 frames per second. plot the displacement, velocity, and acceleration curves. What was the maximum acceleration of the point?