Part 2 - Perfectly Inelastic Collision: Both carts have Velcro facing each other that collide. Table 2: Data for Perfectly In-Elastic Collision. Blue Cart moving to the right and colliding with a stationary Red Cart. Masses added to Blue Cart. Percent Percent Initial Final Initial Final Initial Kinetic Final Kinetic Run Mass Change in Cart Velocity Change in Velocity Momentum Momentum Energy Energy No. (kg) Momentum Kinetic (m/s) (m/s) (kg.m/s) (kg.m/s) (J) (J) Energy Blue 1 250 g X X Red 1 250 g X X Both X X X Blue 2 250 g X X Red 2 500 g X X Both 2 X X X Blue 17 250 g X X Red 17 750 g X X Both 17 X X X