Physics · Physics of Solids

For an object that is deformed energy as stored as the potential energy and is known as the Strain energy.

Elastic energy is the energy stored in a deformed object when it undergoes elastic deformation. This energy is stored in the form of potential energy within the object's molecular or atomic bonds.

Potential energy is a type of energy associated with the position or configuration of an object. In the case of a deforming train, potential energy is stored as the train's shape changes. This potential energy can be released or converted into other forms of energy, such as kinetic energy, when the train returns to its original shape or undergoes further deformation.

Plastic energy Is not a correct term.

Kinetic energy is the energy of motion. While a deforming train may have some kinetic energy due to its motion. 

Elastic energy is the energy stored in a deformed object when it undergoes elastic deformation. This energy is stored in the form of potential energy within the object's molecular or atomic bonds.

Potential energy is a type of energy associated with the position or configuration of an object. In the case of a deforming train, potential energy is stored as the train's shape changes. This potential energy can be released or converted into other forms of energy, such as kinetic energy, when the train returns to its original shape or undergoes further deformation.

Plastic energy Is not a correct term.

Kinetic energy is the energy of motion. While a deforming train may have some kinetic energy due to its motion.