Question 1 Define the term energy? Question 2 What is the S.I. unit of energy? Question 3 Is energy a vector or scalar quantity? Energy Energy is the ability or capability to do work . The sun is the biggest source of energy. Ex:1)When an object is raised to a certain height it gets the capability to do work. 2)When a raised hammer fall on a nail placed on a … [Read more...] about Energy