Before you read this post, I suggest you read posts 16.13, 16.16, 16.17, 16.19 and 16.20. Most people know that “energy” has a precise meaning in science, for example when applied to nutrition or in the phrase “renewable energy”; unfortunately, several people who I’ve met completely misunderstand what this meaning is. Energy is simply the… Continue reading 16.21 Energy

I suggest that you read post 16.13, post 16.16, post 17 and post 16.19 before you read this one. A force does work when it moves something. If a constant force pushes or pulls something in the direction in which it pushes or pulls, the work that it does is defined to be the value… Continue reading 16.20 Work