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- 1. Lesson 1March 9, 2012
- 2. Today’s Outline FORCE AND MOTION: Common Terms Force Newton’s First Law of Motion
- 3. Common Terms Mechanics – The study of motion of objects Kinematics – The science of describing motion (through words, charts, graphs, diagrams, equati ons etc.) For this class, we will be looking at Free-Body Diagrams
- 4. Speed – Describes how fast an object is moving Speed = Distance time
- 5. Velocity Speed of an object in a certain direction v = velocity (meters / second) d = distance (meters) t = time (seconds) d V= t
- 6. Acceleration is how quickly velocitychanges over a certain time. change in Acceleration = velocity time (v2 – v1 ) _______ Acceleration = _ Time V1 = beginning velocity V2 = ending velocity
- 7. Scalar Quantity:A measurement that can be fully described by a magnitude (a numerical value) alone. Example: Speed, distance, timeVector Quantity:A measurement that needs a magnitude as well as a direction for its description. Example: Velocity, Force
- 8. Definition, Categories, Types, and Visual Representation
- 9. FORCE A force is a push or pull upon an object that occurs because when that object interacts with another object Forces ONLY exist when there is interaction. Keep in mind that objects includes anything and everything, including the Earth
- 10. Measured in Newton One Newton is the amount of force required to give an object of 1Kg an acceleration of 1 m/s². A force is a vector quantity (has to have a direction)
- 11. Categories of ForceTwo major categories:1. Contact Force: The types of forces that occur when two objects are said to be in physical contact with each other.2. Action-at-a-Distance Force: Forces that result even when two interacting objects are not in physical contact with each other.
- 12. Contact Forces Frictional Force Tension Force Normal Force Air Resistance Force Applied Force Spring Force

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