7) An object in free fall has Its distance from the ground measured by the function d(t) = -4.91 + 50, where d is in meters and f is in seconds. If gravity is the only acceleration affecting the object, what is gravity's constant value (include units in your answer)? 8) The graph of y = f (x) is shown below on the domain [0, 5]. Sketch the graph of y = f"(x) on the same domain. 9) If a function is decreasing with an upward concavity, what do you know about the function's first two derivatives? 10) Use the graph of y = f'(x) shown below to describe the concavity In the graph of y = f (x) on the Interval [0, 4]