KE1: Kinetic Energy of Glider M1 before collision KE1: Kinetic Energy of Glider M1 after collision KE2: Kinetic Energy of Glider M2 before collision KE1: Kinetic Energy of Glider M1 after collision Trial # KE1 KE2 Total KE KEI' [J] KE2' [J] Total KE' % Difference in total KE [J] [J] [J] [J] before and after the collision 0.031 0 0.031 0 0.0073 0.0073 76% 2 0.088 O 0.088 0 0.0021 0.0021 97% 3 0.179 O 0.179 0 0.1950 0.1950 8%