Final answer:
The point at which energy overcomes resistance against movement is described as the transition from potential to kinetic energy in a conserved system. This occurs when potential energy is converted into kinetic energy, such as when an object in free fall accelerates towards the ground.
Step-by-step explanation:
The point at which energy overcomes resistance against movement is often referred to as the point where potential energy is completely converted into kinetic energy. For instance, when considering an object in free fall, at the point of release, the object has maximum potential energy and negligible kinetic energy. As the object falls and energy overcomes the gravitational resistance to start moving, the potential energy converts into kinetic energy until, at the highest speed just before impact, the kinetic energy is at its maximum.
In more technical terms, within a potential energy curve, the maximum height (ymax) of a particle represents the point where all of its energy is potential energy and its kinetic energy is zero. As the particle starts to move, this potential energy is gradually converted to kinetic energy. At ground level (yo=0), where the potential energy is zero, the kinetic energy and the speed are at their maximum, indicating that all the initial potential energy has been converted to kinetic energy, overcoming any gravitational resistance to movement. It's also crucial to note that for a system where energy is conserved, no energy within the system disappears; it merely changes form, i.e., from potential to kinetic energy.