This document contains practice problems for Newton's 2nd Law, F=ma. Problems include calculating all 3 variables. Units are kept in N, kg and m/s^2. There are 14 problems total and answer key is included. There is also a one page lab paper included for air resistance. Students are asked to create an air craft for an egg out of 2 styrofoam cups, 10 straws, 2 plastic grocery bags, yarn and tape. The goal of the activity is to create the greatest amount of air resistance for the egg's fall to Earth. Purpose of the lab is for students to gain a better understanding of air resistance. Problems and lab are appropriate for grades 7-9.