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Fire Away!!!

Fire Away!!!. 1-2-3 Ground Launched Projectiles. What is a projectile?. A flying object with no means of propulsion after its launch. Can be launched with any VELOCITY and at ANY ANGLE May be subjected to AIR RESISTANCE. Initial velocity. What is the horizontal part of

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Fire Away!!!

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  1. Fire Away!!! 1-2-3 Ground Launched Projectiles

  2. What is a projectile? • A flying object with no means of propulsion after its launch. • Can be launched with any VELOCITY and at ANY ANGLE • May be subjected to AIR RESISTANCE

  3. Initial velocity What is the horizontal part of the soccer ball’s initial velocity? What is the vertical part of the soccer ball’s initial velocity? vix = vi cos θ viy = vi sin θ 12 m/s 6 m/s 30° 10.4 m/s

  4. What assumptions can we make? • Vertical • Initial velocity = vi sin θ • Acceleration = -9.81 m/s2 • Vertical speed = 0 at top Horizontal • Initial velocity = vi cos θ • Acceleration = 0

  5. Projectile Vector Diagram t1/2 vfy = 0 (at top) x y a = 0 a = -9.81 m/s2 vi = vi cos θ vi = vi sin θ vf = 0 (at top) ttot = 2t1/2 ttot

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