Three air carts encompass masses of 4m, 2m, and m. 4m consists of n initial speed of 0. The remaining two carts are at rest primarily. All carts encompass spring bumpers which give elastic collisions.
i) Determine the final speed of each cart.
ii) Confirm that the final kinetic energy of the system is equivalent to the initial kinetic energy. (Suppose that the air track is long adequate to accommodate all collisions)