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Understanding Projectile Motion: Key Concepts and Activities

In this chapter, we explore the dynamics of projectile motion, focusing on the relationship between horizontal and vertical motion. Students will compare free fall and projectile trajectories, analyze the effects of gravity, and investigate how initial velocity and launch angles impact range. The lesson includes hands-on demonstrations with coins, quizzes, and critical discussions. By the end of the lesson, students will apply key terms such as projectile, trajectory, and range, connecting theory to real-world applications.

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Understanding Projectile Motion: Key Concepts and Activities

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  1. Chapter 2, Section 4 Projectile Motion: Launching Things into the Air

  2. October 5, 2010HW: 2.4 PTG #1-7, Skip 4, Due ThursdayP/T Conferences: Oct. 6-7, 4-7:30pm . Report Cards will be given at conferences • Do Now: • WDYS/WDYT • Pg. 174 • Agenda: • Do Now • LO/SC • 2.4 Investigate pg. 174-176 • Learning Objective: • Compare horizontal motion to vertical motion in projectile motion • Success Criteria: • Apply the terms free fall, projectile, trajectory, and range • Provide evidence concerning projectiles launched horizontally from the same height at different speeds (including zero launch speed) • Explain the relationship between the vertical and horizontal components of a projectile’s motion

  3. 2.4 Investigate: Part A Coins • Set up Notebooks • Assign Jobs • #1-2 minutes • #2-5 minutes • #3-10 Minutes • #4-5 Minutes

  4. 2.4 Investigate: Part A • Teacher Demo of coins (pennies, quarters, penny and quarter) • http://www.youtube.com/watch?v=qErh402eJgI

  5. 2.4 Investigate: Part B Vertical and Horizontal Motion of a Projectile • Teacher Demo

  6. October 6, 2010HW: 2.4 PTG #1-7, Skip 4, Due ThursdayP/T Conferences: Oct. 6-7, 4-7:30pm . Report Cards will be given at conferences • Do Now: • Describe what would happen if you dropped a bowling ball and a marble from the same height. • Agenda: • Do Now • LO/SC • Physics Talk • Quiz • Learning Objective: • Compare horizontal motion to vertical motion in projectile motion • Explain the impact of gravity in free falling objects • Explain how initial velocity and the angle of velocity impact the range of an object with projectile motion • Success Criteria: • Apply the terms free fall, projectile, trajectory, and range • Provide evidence concerning projectiles launched horizontally from the same height at different speeds (including zero launch speed) • Explain the relationship between the vertical and horizontal components of a projectile’s motion • Recognize the factors that affect the range of projectiles • Infer the shape of a projectile’s velocity.

  7. 2.4 Physics Talk • What is a projectile? • What happens to two objects that are dropped at the same time if there is little/no air resistance? • An object traveling through the air • They will hit the ground at the same time

  8. 2.4 Physics Talk • Does the horizontal motion of the object affect the time it hits the floor? • No! Horizontal motion and vertical motion are independent of each other!

  9. 2.4 Physics Talk • What happens to velocity with projectiles? • Horizontal velocity remains the same! • Vertical velocity is constantly changing (acceleration due to gravity) • Horizontal and vertical velocity can be combined to predict the range of a projectile.

  10. What do you think now? • Answer question on pg. 181

  11. 2.4 Quiz

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