Unit 1 Concept Questions 1. Free Fall Velocity ~ Arock dropped near the surface of the Earth travels D(t) = 16t2 feet during the first seconds of the fall. (a) Fill out the partial table for the first 3 seconds: (b) Refer to the graph of D(t). Compare your table to the graph. Describe the overall features of the graph, i.e., is the function increasing, decreasing, concave up/down, etc. (see p. 85 for a summary of graph features). 150 D (distance in feet) 1100 t (time in =aranney 3. 4. b, 6. (c) What is the average velocity of the rock from time = 2 to time = 3? Include the steps to find the average velocity and the units (feet per seconds) in your