When the cart is given a hard push, the magnetic force is not enough to slow down the cart. As a result, the cart comes into contact, losing about 17% of it's kinetic energy in the form of thermal and sound energy during the collision. This video is created to clear the misconception that cart moving apart always have its KE conserved as well as to compare the graphs with the elastic collision
Author: Leong Tze Kwang, Lim Beng Choo