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Chapter 2

Chapter 2. Physics A First Course. Forces and Motion. Forces and Motion Laws of Motion. 2.1 Newton's First Law 2.2 Acceleration and Newton's Second Law 2.3 Gravity and Free Fall 2.4 Graphs of Motion. Key Question: Why are heavier objects harder to start or stop moving?.

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Chapter 2

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  1. Chapter 2 Physics A First Course Forces and Motion

  2. Forces and MotionLaws of Motion • 2.1 Newton's First Law • 2.2 Acceleration and Newton's Second Law • 2.3 Gravity and Free Fall • 2.4 Graphs of Motion

  3. Key Question: Why are heavier objects harder to start or stop moving? 2A Investigation: Law of Inertia *Students read text section 2.1 AFTER Investigation 2A

  4. 2A Investigation Topics • Launch cars of different mass. • Measure time intervals. • Calculate speed based on measured time intervals. • Graph speed vs. mass. • Research and define terms: inertia, weight and mass.

  5. force Newton's first law inertia newton net force Recognize that force is needed to change an object's motion. Explain Newton's first law. Describe how inertia and mass are related. Chapter 2.1 Objectives and Vocabulary

  6. Key Questions: What is force? What is the relationship between force and motion? 2B Investigation: Newton's Second Law *Students read text section 2.2 AFTER Investigation 2B

  7. 2B Investigation Topics • Measure time intervals of car moving along track. • Calculate and compare speeds of car at different points on track. • Evaluate forces acting on car. • Calculate acceleration of car. • Use Newton's second law to calculate the force. • Graph force vs. time for the car on the track. • Explain how speed and acceleration are different using graphs.

  8. acceleration deceleration Newton's second law Define and calculate acceleration. Explain the relationship between force, mass, and acceleration. Determine mass, acceleration and force given two of the quantities. Chapter 2.2 Objectives and Vocabulary

  9. free fall acceleration due to gravity velocity weight air resistance terminal speed Describe the motion of an object in free fall. Calculate the speed and distance for an object in free fall. Distinguish between mass and weight. Explain how air resistance affects the motion of objects. Chapter 2.3 Objectives and Vocabulary

  10. slope Describe motion with position versus time and speed versus time graphs. Use a position versus time graph to calculate speed from the slope. Use a speed versus time graph to calculate acceleration and distance traveled. Chapter 2.4 Objectives and Vocabulary

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