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Projectile Motion

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Projectile Motion

Linear Motion, Free Fall, and Vectors Combined!

- Is any object that moves through air or space acted on only by gravity (2 dimensional motion)

- If a bullet is shot out of a gun horizontally and another is dropped from the same height, which will hit the ground first? Why?

- Horizontal Component (x-direction): no forces, constant velocity, no acceleration
- Vxo = Vx
- ax = 0

- Vertical Component ( y- direction) : force of gravity, velocity changes, acceleration
- ay = -9.80m/s2

- The components do not depend on each other
- Combined, they form the projectiles path (its TRAJECTORY)
- Time is the only factor that is the same in both directions

- If I were to shoot at a target, where should I aim?

- For a vertically launched projectile, the shape of the trajectory is a parabola:

- How do horizontal and vertical motion effect each other in projectile motion?
- Describe the velocity and acceleration in the x direction.
- Describe the velocity and acceleration in the y direction.

- Both horizontal and vertical motions are constant acceleration so the old eq. of motion still apply!
x-component y- component

- v= vo + at
- d= do+vot+1/2 at2
- v2=v2o + 2a(d-do)

- You decide to go cliff jumping and run off a 10.0 m cliff with a horizontal velocity of 1.50 m/s. How far from the bottom of the cliff will you land in the water?