Forces and Their Representation

Now that you have learned to describe motion, it’s time to understand: why objects move, why they accelerate, why they will come to rest and when they will stay there. This is all about forces. In this topic, you will learn what a force is and how physics classifies various forces. Then, you will go on to investigate some common forces and see how to represent them so that you can predict the motion of objects.

Essential Questions:

• How do you define and represent forces?
• What is the difference between mass and weight?