06 - Projectile Motion

06 - Projectile Motion - Projectile motion Reading 4.4-4.6...

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Projectile motion Reading: 4.4-4.6 Chapter 4 homework: Problems 8, 10, 24
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Monkey- drop demo A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. How should the hunter aim to hit the monkey? 1. Aim directly at the monkey 2. Aim high (over the monkey's head) 3. Aim low (below the monkey)
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Demo: Shooter- dropper Two balls are launched simultaneously from the same height. Ball A is released from rest, and drops straight down. Ball B is given an initial horizontal velocity. Which ball hits the ground first? 1. Ball A 2. Ball B 3. Both balls hit the ground at the same time
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Shooter-dropper
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v o v=0 v o
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v o 1 Sec.
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v o 2 Sec.
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v o 3 Sec.
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v o 4 Sec.
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Projectile motion • Example of motion in two dimensions • Motion in vertical direction is independent of the motion in the horizontal direction – Vertical motion has constant acceleration – Horizontal motion has constant velocity
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An ugly giant rolls a billiard ball with uniform velocity 30 m/s across the top of his desk. The ball rolls off the edge of the desk and lands on the floor 120 m from the edge of the desk. 120 m Question: How high is the table?
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An ugly giant rolls a billiard ball with uniform velocity 30 m/s across the top of his desk. The ball rolls off the edge of the desk and lands on the floor 120 m from the edge of the desk.
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06 - Projectile Motion - Projectile motion Reading 4.4-4.6...

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