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Unit 5: Physics in Action

Unit 5: Physics in Action. Essential Questions. What is inertia, acceleration, and gravity? What are Newton’s 3 Laws of Motion and how can they be applied to everyday principles? How does a person’s center of mass effect their balance and performance?

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Unit 5: Physics in Action

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  1. Unit 5: Physics in Action

  2. Essential Questions • What is inertia, acceleration, and gravity? • What are Newton’s 3 Laws of Motion and how can they be applied to everyday principles? • How does a person’s center of mass effect their balance and performance? • What is vertical accelerated motion and how can this be applied to athletic jumping? • How does the surface effect the force due to friction, and how does this affect an athlete’s performance? • What is momentum and how is it conserved?

  3. Chapter Challenge – Due January 30 • You will need to find a 2-3 minute sports clip (can be recorded from TV or downloaded from the internet) of a sport that you enjoy watching/participating in • You may work individually or with a group (max. 3 people) • You will explain the physics principles behind the sport clip by either: • Submitting a written script • Performing a live narrative • Dubbing onto the video soundtrack • Recording on file

  4. Day 1: A running Start • Learning Objectives: • Understand and apply Galileo’s Principle of Inertia • Understand and apply Newton’s First Law of Motion • Recognize inertial mass as a physical property of matter

  5. Starter • Watch the following videos and answer the questions: • What determines the amount of horizontal distance a basketball player travels while “hanging” to do a slam dunk during a fast break? • How do figure skaters keep moving across the ice at a high speed for long periods of time while seldom pumping their skates? • Time: 15 minutes

  6. Activity 1 • Newton’s First Law of Motion • Place some water in a plastic beaker. • Place a piece of paper under the beaker. • Try to remove the paper without spilling any water • Try this again using a different amount of water. Any change? • Create a definition for Newton’s first law of motion based on what you observed • Time: 20 minutes

  7. Activity 2 • Make a target on a piece of paper • You are going to try to hit the target with a tennis ball as you run past it • Make any changes to your definition for Newton’s first law of motion based on what you observed • Time: 20 minutes

  8. Activity 3 • Complete steps 1-4 on pages 5 & 6 • Record your data in a table you create • Time: 25 minutes

  9. Closing & homework • What does Newton’s First Law of Motion state? • Why is a ball’s return height not a mirror image when you roll it down a ramp? • For you to read/Physics talk, page 8-12 • Physics to go, pg. 13 # 1, 4, 5, 6, 8, 9

  10. Day 2: Adding vectors • Learning Objectives: • Recognize that a force is a push or pull • Identify the forces acting on an object • Determine when the forces on an object are either balanced or unbalanced • Calibrate a force meter in arbitrary units • Use a force meter to apply measured amounts of force to objects • Compare amounts of acceleration semi-quantitatively • Understand and apply Newton’s Second Law of Motion • Understand and apply the definition of the newton as a unit of force • Understand weight as a spatial application of Newton’s Second Law

  11. Starter • What is a force? • What is Newton’s Second Law of Motion? • If you apply the same amount of force to the shot put and the tennis ball, • Will they move the same distance? • Will one ball move farther than the other? • Why? • Time: 15 minutes

  12. Activity 1 • Choose 4 various masses and record their weight in newtons. Check that the mass is correct by taking the mass on the electronic scale. • How will acceleration be calculated? • What do you notice about the acceleration of each mass? What does this number represent? • Time: 25 minutes

  13. Activity 2 F = ma a = F/m • Take a coffee mug and find its mass • Slide the coffee mug across the table at a slow, constant speed. Record the force used to pull the mug. • Repeat, this time sliding the mug at a faster rate. Record the force used to pull the mug. • Calculate the acceleration in both cases. What conclusion can you make? • Time: 15 minutes

  14. Activity 3 • We will go to the computer lab to go through 2 activities: • http://www.bbc.co.uk/bitesize/ks3/science/energy_electricity_forces/ • Go to “Forces” and do the “revise”, “activity”, and “test” • http://learner3.learner.org/interactives/parkphysics/bumpercars/ • Work through the bumper car problems • Time: 30 minutes

  15. Closing & homework • Read physics talk/for you to read, Pg. 18-22 • Physics to go, Pg. #1, 2, 5, 9 • Choose any 3 calculation questions from #3, 4, 11-18

  16. Day 3: Center of Mass

  17. Day 4: Defy Gravity (60 mins)

  18. Day 5: Run and Jump

  19. Day 6: The Mu of the Shoe

  20. Day 7: Concentrating on Collisions

  21. Day 8: Summative Assessment (60 mins) • Presentation of Commentary on Sporting Event

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