Chapter 2 - One-Dimensional Kinematics - Problems and Conceptual Exercises - Page 48: 2

(a) The distance traveled is 5 m. Displacement: $\Delta x=5m$ (b) The distance traveled is 2 m. Displacement: $\Delta x=-2m$

(a) We know that $Displacement \space of\space player A=final \space position- initial \space position$ $\implies Displacement \space of\space player A=5.0m-0m=5.0m$ (b) We know that $Displacement \space of \space player B=Final \space position-Initial \space position$ We plug in the known values to obtain: $Displacement \space of \space player B=5m-7m=-2.0m$