(25) 9. A marathin runner runs at a constant speed of 2.20 m/'s for 10.0 s. She increases her speed to 3.60 m/s during the next 18.1 m. a) Prepare: draw a pictorial diagram and identify the variables used b) What is the displacement of the runner after the 10.0 s? c) What is her acceleration during the 18.1 m travel? d) What is the elapsed time during the 18.1 m travel? e) Draw a graph of the position vs. time and the velocity vs, time. Using the information given or your calculations, put numerical magnitudes on both axes, x (m) v (m/s)