p111_lecture5

p111_lecture5 - Chapter 3 Kinematics in Two Dimensions...

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Kinematics in Two Dimensions Chapter 3 Projetile Motion -- Continued
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3.3 Projectile Motion Under the influence of gravity alone, an object near the surface of the Earth will accelerate downwards at 9.80m/s 2 . 2 s m 80 . 9 ! = y a 0 = x a constant = = ox x v v
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3.3 Projectile Motion Example 3 A Falling Care Package The airplane is moving horizontally with a constant velocity of +115 m/s at an altitude of 1050m. Determine the time required for the care package to hit the ground.
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3.3 Projectile Motion ? 0 m/s -9.80 m/s 2 -1050 m t v oy v y a y y
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3.3 Projectile Motion ? 0 m/s -9.80 m/s 2 -1050 m t v oy v y a y y 2 2 1 t a t v y y oy + = 2 2 1 t a y y = ( ) s 6 . 14 s m 9.80 m 1050 2 2 2 = ! ! = = y a y t
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3.3 Projectile Motion Example 4 The Velocity of the Care Package What are the magnitude and direction of the final velocity of the care package?
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3.3 Projectile Motion 14.6 s 0 m/s ? -9.80 m/s 2 -1050 m t v oy v y a y y
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3.3 Projectile Motion 14.6 s 0 m/s ? -9.80 m/s 2 -1050 m t v oy v y a y y ( ) ( ) s m 143 s 6 . 14 s m 80 . 9 0 2 ! = ! + = + = t a v v y oy y
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Find the final velocity of the package.
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This note was uploaded on 06/03/2011 for the course PHY 111 taught by Professor Bolland during the Fall '10 term at Ohio State.

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p111_lecture5 - Chapter 3 Kinematics in Two Dimensions...

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