1. Newton’s First Law Inertia Define Inertia. Be able to state Newton’s 1 st law. Distinguish among mass, volume, and weight Distinguish between the kilogram and Newton as unit of measurement. For an object on a slope, resolve its weight into a component that causes acceleration along the slope and a component that presses it against the slope.

2. Possible MISCONCEPTIONS….. these are NOT true Constant motion requires force. Not true, why? Even if no force acts on a moving object, it will eventually stop. Not true, why? Inertia is a force. Not true. Weight and mass are two name for the same thing. Not true, why? Mass and volume are two names for the same thing. Not true, why?

3. Newton’s 2 nd Law F=ma or a=F/m Define and explain net force. State the relationship between acceleration and net force. State the relation between acceleration and mass. Distinguish between the concepts of directly proportional and inversely proportional. State and explain Newton’s 2 nd law.

4. Distinguish between force and pressure Apply Newton’s second law to explain why the acceleration of an object in free fall does not depend upon the mass of the object. Describe what happens to the acceleration and the speed of a falling object when there is air resistance.

5. Possible MISCONCEPTIONS If an object has zero acceleration, it must be at rest. Not true, why?? Pressure and force are the same. Not true, why??

6. Newton’s 3 rd Law Action and Reaction Define forces in terms of interaction. Explain why at least two objects are involved whenever a force acts. State Newton’s 3 rd law of motion. Given an action force, identify the reaction force.

7. Possible MISCONCEPTIONS Pushes and pulls are applied only by living things. Not true, why?

8. Be sure you can find the component forces of a resultant. Be able to add 2 or 3 vector forces to get the resultant magnitudes and direction. Be sure to know how to find the equilibrant magnitude and direction. Review ‘Bubba and Junior” problems. Review ‘Forces and Pressure’ handout problems.