The conservation of mechanical energy
The law of conservation of energy is one of the basic laws of physics and therefore governs the microscopic motion of individual atoms in a chemical reaction. The law of conservation energy states.
In a closed system, i.e., a system that isolated from its surroundings, the total energy of the system is conserved.
The law of conservation of energy can be seen in these everyday examples of energy transference
When you push a book across the table, the energy from your moving arm is transferred from your body to the book, causing the book to move.
When kicking a football that is sitting on the ground, energy is transferred from the kicker’s body to the ball, setting it in motion.
The dog ran in into the Christmas tree and knocked it over. Energy was transferred from the moving dog to the stationary tree, causing the tree to move
When the car hit the curb it broke apart. Energy from the moving car was transferred to the non-moving cement, causing it to move