Ramon puts two magnetic toy trains very close to each other on a track. What will happen next, and why?

In a computer simulation, Jeffrey moves a magnet (Magnet 2) toward another magnet (Magnet 1) that cannot move. What happens to the potential energy in the system of magnets?

Based on the magnetic field line diagrams, what will happen next with these two sets of magnets?

Abdul moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?

A spaceship is traveling through space. Suddenly, its kinetic energy decreases. What is most likely to be true about the speed of the spaceship?
How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?