1. Projectile Motion
Chapter 3-3

2. Projectile Motion
• Objects that are thrown or launched into
the air and are subject to gravity are
called projectiles
• Path of a projectile is called a parabola
– With air resistance, the path is not a
parabola
– Text keeps the horizontal velocity of a
projectile constant (doesn’t account for air
resistance)

3. Vertical Motion of a Projectile
• Put equations on page 100 onto formula
sheet
• Used to calculate the vertical component
of final velocity and the vertical
displacement
– Can use 3rd equation to solve for time (see
page 101)

4. Horizontal Motion of a Projectile
• Put equations on page 100 onto formula
sheet
– The horizontal component of velocity is
constant
– The horizontal displacement can be
calculated by multiplying the horizontal
velocity by the time the object is in the air

5. Sample Problem 3D
1. Write given information and make a diagram
2. Analyze equations and develop a plan
3. Calculate
4. Check your work

6. Classwork/Homework
• Do Practice 3D Problems 1-4

7. Projectiles launched at an angle
• Sine and cosine can be used to find
the horizontal and vertical
components of the initial velocity
• Add formulas from page 102 to
formula sheet

8. Practice Problems
• Pg. 103 - Sample Problem 3E
• Homework
–Pg. 104, Practice Problems 3E, #1-5