This lab is on numerical analysis and has the students using Excel to calculate numerical solutions to the trajectory of an object falling with air resistance.� The goal of this lab is to familiarize students with the basic functions of a spreadsheet and the idea of numerical approximations to solutions.� To that end the students should be taught proper techniques to avoid "hardcoding" variables into the spreadsheet. You can point out to the students the difference between a relative reference and an absolute reference as differentiated by the "$" before the column or row number (with a "$" gives an absolute reference, without it is relative), and have them create cells where all variable values are stored.�