1. Siti dropped a squash ball from a tall building.She then recorded the speed of theball at various times. His results are shown in the table. Time (s) 1 2 3 4 5 7 8 Speed (m/s) 8 13 16 19 21 22 22 a) Plot a graph of speed (y-axis) against time (x-axis). [5] b) What is the shape of the graph? [1] c) From the graph, determine the speed of the squash ball at the time equal to 4.5 s. [2] d) Study the graph and predict the speed of the squash ball after 10 s. [1] _______________________________________________________________________ e) Explain how you arrived at your answer in part (d) [1] _______________________________________________________________________ 2. Ahmad dropped a ping-pong ball from a tall building. He then recorded the speed of the ball at various times. His results are shown in the table. Time (s) Speed (m/s) 1 9 2 16 3 21 4 26 5 30 6 32 8 33 a) Plot a graph of speed (y-axis) against time. [5] b) What is the shape of the graph? [1] ________________________________________________________________________ c) From the graph, determine the speed of the ping-pong ball at the time equal to 4.5 s. [2] ________________________________________________________________________ d) Study the graph and predict the speed of the ping-pong ball after 10 s. [1] ________________________________________________________________________ e) Explain how you arrived at your answer in part (d). [1] ________________________________________________________________________ Title: ___________________________________________________________________