Which equation expresses the conservation of mechanical energy in a system that involves kinetic energy, gravitational potential energy, and elastic potential energy?

1/2mv^2 = mgh. is the equation that expresses the conservation of mechanical energy in a system where the only forms of mechanical energy are kinetic energy, gravitation potential energy and elastic potential energy So the chemical equation for this three energy are 1/2mv^2 = mgh

The answer is 1/2mv^2 = mgh