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2-6 Projectile Motion
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2-6 Projectile Motion

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  • T 7
  • Transcript

    • 1. 2-6: Projectile motion
      • Recognize examples of projectile motion.
      • Describe the path of a projectile as a parabola.
      • Resolve vectors into their components and apply the kinematic equations to solve problems involving projectile motion.
    • 2. Projectiles
      • All projectiles follow parabolic trajectories.
      • When you throw a football, it follows a parabola.
      • In this class, horizontal velocity will remain constant.
        • In the real world, air resistance slows the velocity.
        • Air particles collide with object slowing the object.
    • 3.
      • Compare the two examples of free fall.
      • Components are independent of one another.
      • Analyze the motion each dimension separately.
    • 4. Formula for parabolic motion
      • Remember analyze each dimension separately.
      • Remember the kinematic equations from Ch. 2.
    • 5. A movie director is shooting a scene that involves dropping a stunt dummy out of an airplane and into a swimming pool. The plane is 10.0 m above the ground, traveling at a velocity of 22.5 m/s in the positive x direction. The director wants to know where in the plane’s path the dummy should be dropped so that it will land in the pool.
    • 6. Projectiles launched at angles
      • Still remember the kinematic equations.
    • 7. A zookeeper finds an escaped monkey hanging from a light pole. Aiming her tranquilizer gun at the monkey, the zookeeper kneels 10.0 m from the light pole. The monkey tries to trick the zookeeper by dropping a banana, then continues to hold onto the light pole. At the moment the monkey releases the banana, the zookeeper shoots. If the tranquilizer dart travels at 50.0 m/s, will the dart hit the monkey or the banana?
    • 8. 2-6: Summary
      • Neglecting air resistance, a projectile has a constant horizontal velocity and constant downward free-fall acceleration.
      • In the absence of air resistance, projectiles follow a parabolic path.

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