what does the law of conservation state?

Question

its a science question

Answer 1

An object, (me) at rest will remain at rest until acted on by another force. (my gf)

Answer 2

The Law of Conservation states that the total energy of a system cannot change unless work is done on the system.

Therefore, within a system, if potential energy decreases, kinetic energy must increase by the same amount. If potential energy increases, kinetic energy must decrease by the same amount.

Answer 3

well you have the law of conservation of matter, momentum, law of conservation of energy... basically they all mean that input is equal to output. for energy it means that energy cannot be created or distroyed, it just changes forms. when you gain one type of energy you are losing another type. just remember for problems to set conservation equation to a consant value. for example potential energy + kinetic energy = mechanical energy. if you gain potential energy you are losing kinetic energy.
and for chemical equations conversion of one type of matter is usually accompanied by releasing or absorbing heat, which is a type of energy. you can transform energy from elecrtical energy into mechanical energy, or heat, even light but that energy is going towards the production of another type of ebergy it doesnt just disapear.