Final answer:
The ball's movement energy came from an initial kinetic energy from a force or prior movement. Conservation of momentum dictates energy transfer during collisions, but not all energy remains useful for work due to the second law of thermodynamics, including losses from deformation, friction, and gravity.
Step-by-step explanation:
In the scenario you described regarding the ball's movement, its energy originated from an initial state where the ball possessed kinetic energy. This energy was likely the result of an applied force or prior motion. For example, if someone threw or hit the ball, the force exerted onto the ball transferred energy into the ball's motion, giving it kinetic energy. During a collision, some of this kinetic energy is transferred to the other object, as stated by the conservation of momentum. This means that the total momentum before the collision must equal the total momentum after the collision, which includes both objects involved.
Ironically, the same conservation principles dictate that not all energy remains as useful kinetic energy. According to the second law of thermodynamics, the amount of useful energy decreases over time within an isolated system. This is because random motion, heat loss, deformation, and friction can account for the lost energy that does not transfer during the collision.
For instance, energy can be lost due to the deformation of the ball during its impact, friction between surfaces, and work done against gravity. So when you're asking where the second system (the ball) got its energy to move, it comes from the initial conditions and actions that preceded the situation you're observing.