1. Chapter 5: Force and Motion I

2. Newton’s Laws I.If no net force acts on a body, then the body’s velocity cannot change. II.The net force on a body is equal to the product of the body’s mass and acceleration. III.When two bodies interact, the forces on the bodies from each other are always equal in magnitude and opposite in direction.

3.  Mass, Force and Acceleration Unit of force: SI: newton (N), cgs: dyne F=ma Sample Problem 5-3

4. Some particular forces Gravitational Force Normal Force Tension

5. Application  Sample problems 5-6, 5-7 and 5-9