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Physics- Force
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FORCE  (CSS 2)

 Force: A push or pull on an object. Giving the object energy to work or change.

            *types: gravity, electromagnetic, nuclear, air pressure, thrust, normal,drag                         + others

            *2 components: 1) magnitude/strength

                        2) direction

            *formula: f=m*a   force equals mass times acceleration

                        a=f/m    m=f/a

            *measurement: Newton (N)- 1kg/m/s/s

            Energy: ability to do work or cause change.

            Work: (physical work) when force makes something move.

                        application of force.

             *Balanced Forces: two or more forces that cancel each other out.

                        Does not cause change of object’s motion.

                        Net force is zero.

            *Unbalanced Forces: two or more forces that are not equal.

                         Causes the object to accelerate.

                        Net force is not zero.

            *Net Force: sum of forces upon an object (what’s left).

                        -Vectors: arrow to show force and amount of force upon object by                                                 Newton’s

Friction: A force that slows motion, or prevent motion.

                    An unbalanced force.

                     A rubbing between two surfaces creating a resistance to the object in                         motion.

            Types of Friction:  static, sliding, rolling, air resistance

 Review

Inertia: resistance to change. How easy or hard to change object’s momentum.

            measured by mass.

 Velocity: rate of change of position/displacement

 Mass: measurement of matter, space things take up. (kg)

 Motion: change in position of object.  The distance object moved from original/reference point.

 

 

 

 


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