Episode 4 — Mechanics - Work, Energy and Power

Conservation of Energy

Learners will be able to:

• Describe the definition of mechanical energy and its relationship to kinetic and gravitational potential energy. • Explain how an object's mechanical energy enables it to do work by applying force to another object. • Identify examples of non-conservative forces, such as friction and air resistance, that can transform mechanical energy into other forms of energy. • Apply the law of conservation of energy to isolated systems where only conservative forces are present. • Calculate the work done by a non-conservative force using the formula WNC = Fd cos θ.