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# Projectile motion 3.3 notes

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### Projectile motion 3.3 notes

1. 1. Projectile Motion Chapter 3-3
2. 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. 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. 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. 5. Sample Problem 3D1. Write given information and make a diagram2. Analyze equations and develop a plan3. Calculate4. Check your work
6. 6. Classwork/Homework• Do Practice 3D Problems 1-4
7. 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. 8. Practice Problems• Pg. 103 - Sample Problem 3E• Homework –Pg. 104, Practice Problems 3E, #1-5