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Projectile Motion

Projectile Motion. Linear Motion, Free Fall, and Vectors Combined!. Projectile. Is any object that moves through air or space acted on only by gravity (2 dimensional motion). Projectiles.

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Projectile Motion

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  1. Projectile Motion Linear Motion, Free Fall, and Vectors Combined!

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

  3. Projectiles • 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?

  4. Components of Projectiles(Vectors!) • Horizontal Component (x-direction): no forces, constant velocity, no acceleration • Vxo = Vx • ax = 0

  5. Components of Projectiles(Vectors!) • Vertical Component ( y- direction) : force of gravity, velocity changes, acceleration • ay = -9.80m/s2

  6. Components are INDEPENDENT • 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

  7. Target Practice • If I were to shoot at a target, where should I aim?

  8. Components of a projectile’s velocity • For a vertically launched projectile, the shape of the trajectory is a parabola:

  9. Did you get it? • 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.

  10. Solving problems • 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)

  11. Practice Problem • 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?

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