Tables of Observations: Table 1: final velocity and momentum in a 2D elastic collision. Ball Px (final) Py (final ) Vx (final) Vy (final) 1 (green/blue) 1015 3 0.34 0. 35 0123 2 (red - 0.03 - 0.34 - 0.68 Table 2: final velocity and momentum in a 2D inelastic collision. Ball Px (final) Py (final) Vx ( final) Vy (final) 1 (green/blue) -0.16 -0.06 0. 71 2 (red 0. 16 0.34 Table 3: Kinetic energy in a 2D elastic collision Ball Kinetic Energy Before () Kinetic Energy After (J) 1 (green/blue) O 0. 1323 2 (red 0.25 0. 1190 Totals 0. 25 0. 2513 Table 4: Kinetic energy in a 2D inelastic collision Ball Kinetic Energy Before (J) Kinetic Energy After (J) 1 (green/blue) 1. 00 0. 5041 2 (red) 0. 0625 0. 1156 Totals 10625 0. 6197