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

2. October 5, 2010 HW: 2.4 PTG #1-7, Skip 4, Due Thursday P/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
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)

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

6. October 6, 2010 HW: 2.4 PTG #1-7, Skip 4, Due Thursday P/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