1. Physics Section 4.2 Apply Newton’s 1st Law of Motion Newton’s 1 st Law of Motion (Law of Inertia) An object at rest remains at rest and an object in motion continues in motion with a constant velocity unless the object experiences a net external force. Inertia is a property of matter that resists changes in its state of rest or motion. The inertia of an object is directly proportional to its mass. Table cloth demo

2. example A book is placed on a table that is inclined at a 35 o angle. Based on the free body diagram, find its net force.

3. Equilibrium- is the state in which the net force acting on an object is zero. It’s motion will not change.

4. assignment Page 129 Problems 1-5