Lecture3-2A_000

Lecture3-2A_000 - Today's Lecture Vector Description of...

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Today Today s Lecture s Lecture Vector Description of Motion Vector Description of Motion Motion Motion in More Than One in More Than One - - D D
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An object undergoes acceleration of over a period of 10 s . After these 10 s its velocity is a) What is the initial velocity? a 2.3 i 3.6 j m / s 2 v f 33 i 15 j m / s . b) By how much did its speed (magnitude of velocity) change? Hence, a v f v i Δ t v i v f a Δ t v i 33 i 15 j 2.3 i 3.6 j 10 v i 10 i 21 j m / s v f 33 2 15 2 36.25 m / s and v i 10 2 21 2 23.26 m / s Δ v v f v i 13 m / s Example: Velocity/Acceleration in 2D Example: Velocity/Acceleration in 2D
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Example: Velocity/Acceleration 2D Example: Velocity/Acceleration 2D An object undergoes acceleration of over a period of 10 s . After these 10 s its velocity is c) By how much did its direction change? a
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Lecture3-2A_000 - Today's Lecture Vector Description of...

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