Chapter 4 - Dynamics
Newton’s First Law says that an object will persist in its state of motion unless acted upon by a net external force. We will need to apply this law in the GCE A Levels, together with the concept of inertia.
Newton’s Third Law says that if object A exerts a force on object B, then object B exerts an equal but opposite force back on object A. The GCE A Levels requires us to recognise action-reaction pairs, and draw some conclusions based on the knowledge that a reaction force always exists.