1. Physics - Chapter 3

2. Section 3-5 Projectile Motion
Chapter 2 - Motion in one direction X or Y
Projectile Motion - Motion in two directions X & Y
Examples - golf ball, thrown baseball, kicked football, speeding bullet, long jump
Air resistance - ignored in calculations, is often important
Problems deal with objects after they are moving freely in the air
Chapter 3

3. Demo - Projectiles - Predict result, why?
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4. Projectile Motion (cont.)
Galileo - Analyze horizontal and vertical motion separately
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5. Overheads - Projectile Motion velocity & acceleration 3-18, 3-20
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6. Y Direction (Y component)
Acceleration is constant a = g = -9.8 m/s2
Velocity changes with time due to g.
If dropped v increases.
If projected at upward angle, v decreases and becomes negative.
Chapter 3

7. X Direction ( X component)
Acceleration is zero
Velocity remains constant, equal to initial value
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8. Galileo - An object projected horizontally will reach the ground in the same time as an object dropped vertically. The vertical motions are the same in both cases.
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9. 3-6 Solving Problems Involving Projectile Motion
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10. Table 3-1 & 3-2 Equations
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11. Example 3-3 through 3-8
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12. Skip 3-7 & 3-8
Chapter 3