This model is designed for the study of mechanical energy and linear momentum conservation laws using elastic and inelastic collisions as an example. Change the carts? masses and initial velocities and alter the types of collisions (elastic or inelastic). Observe the motion of the carts after the collision and determine the kinetic energy and the linear momentum of each cart. Note that in an elastic collision, the total kinetic energy of the carts does not change, whereas after an inelastic collision, the total kinetic energy decreases. Calculate how much of the initial kinetic energy turns to heat during inelastic collisions.