Newton
... Isaac Newton (a 17th century scientist) put forth three laws which explain why objects move (or dont move) as they do and these three laws have become known as Newtons three laws of motion. ... According to Newton, an object will only accelerate if there is a net or unbalanced force acting upon it. ... One Newton is defined as the amount of force required to give a 1-kg mass an acceleration of 1 m/s2. ... According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. ... One Joule is equivalent to one Newton of force causing a displacement of one meter. ... 1 Joule = 1 Newton * 1 meter 1J = 1 N * m In fact, any unit of force times any unit of displacement is equivalent to a unit of work.