You recorded your position with respect to the front door of your house as you walked to the mailbox. Examine the data presented in the table:

t (s)	1	2	3	4	5	6	7	8	9
x (steps)	2	4	9	13	18	20	16	11	9

and answer the following questions:

a) What instruments did you use to collect data?

b) What are the uncertainties in your data?

c) Represent your motion using a position-versus-time graph.

d) Tell the story of your motion in words.