Transcript Chapter 2, Section 4 - Ms. Juengel's Class

Chapter 2, Section 4
Projectile Motion: Launching
Things into the Air
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. 174176
 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
2.4 Investigate: Part A Coins
 Set up Notebooks
 Assign Jobs
 #1-2 minutes
 #2-5 minutes
 #3-10 Minutes
 #4-5 Minutes
2.4 Investigate: Part A
 Teacher Demo of coins (pennies,
quarters, penny and quarter)
 http://www.youtube.com/watch?v=qErh
402eJgI
2.4 Investigate: Part B Vertical and
Horizontal Motion of a Projectile
 Teacher Demo
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.
2.4 Physics Talk
 What is a projectile?
 An object traveling
through the air
 What happens to two
objects that are dropped
at the same time if there
is little/no air resistance?
 They will hit the ground
at the same time
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!
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.
What do you think now?
 Answer question on pg. 181
2.4 Quiz