Question

is mechanical energy always conserved. justify the statement​

Answer 1

Answer:

** Yes**The principle of conservation of mechanical energy states that in an isolated system that is only subject to conservative forces, the mechanical energy is constant. ... In elastic collisions, the mechanical energy is conserved, but in inelastic collisions some mechanical energy is converted into thermal energy.

Explanation:

Mechanical energy is conserved (in the absence of friction). ... Halfway down it will have half kinetic energy and half potential energy. As it moves down, the potential energy will be converted (changed) into kinetic energy until all the potential energy is gone and only kinetic energy is left.