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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.