Name Date Pd UNIT II: Worksheet 3 1. Robin, roller skating down a marked sidewalk, was observed to be at the following positions at the times listed below: t (s) x (m) 0.0 10.0 * () ..L. 1.0 12.0 2.0 14.0 5.0 20.0 8.0 26.0 10.0 30.0 t() a. Plot a position vs. time graph for the skater. b. How far from the starting point was he at t = 6s? How do you know? (0, 10 ) ( 1, 12) 2 orz Stope = velocity He will be starting at 22 me at lis. I know this ( 4 , x ) 18, 26) because his position is increasing by Zi each second due to the Slope c. Write a mathematical model to describe the curve in (a). Ad d. Was his speed constant over the entire interval? How do you know? His speed was constant because his position would increase 2 meters every is Modeling Workshop Project 2002 1 Unit II ws3 v2.0