Solution:
Energy is the ability to do work. There are two main types of energy: kinetic energy and potential energy. Solution: Energy is the ability to do work
Efficiency is a measure of how much of the input energy is converted into useful work. It is calculated using the equation: Solution: Energy is the ability to do work
Work done = m × g × h = 100 kg × 9.8 m/s^2 × 5 m = 4900 J Solution: Energy is the ability to do work