Law Of Conservation Energy and Momentum

Conservation Energy: Energy states that the energy can neither be created nor destroyed but can be transformed from one form to another.

Momentum:Momentum of the body is defined as the product of its mass and the velocity.

Law Of Conservation Energy

The Law of Conservation of Energy states that "the total energy of an isolated system is conserved or said to be constant over time". It can also be said that "energy cannot be created or destroyed , but it can be transformed from one form to another form".

Conservation means to result in no net loss of a particular component. So the law says that there is no loss of energy in any isolated system. According to the statement of the law the total energy in the universe if fixed and it cannot be decreased or increased. Thus the energy is converted from one form to another form such as from heat energy to mechanical energy or chemical energy or electrical energy and so on and there is no loss of energy during this process. The energy either remains in one or the other form, but is not lost completely.

Law Of Momentum

Momentum is a vector quantity. It is normally denoted by the letter ‘p’.

So momentum,p= mass(m) x velocity(v) =m _* v. The unit of momentum is Kg m/s in MKS and g cm/s in CGS system.

Law of conservation of momentum states that momentum is a conserved quantity like energy.

Law of conservation of momentum is originally modulated from Newton’s second law of motion. The application level of law of conservation of momentum is seen in electrodynamics, quantum mechanics, quantum field theory and general relativity.