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PHYS171_f11_lecture_08

# PHYS171_f11_lecture_08 - PHYS171 Principles of Physics I...

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PHYS171 Principles of Physics I Prof. Arthur La Porta Assistant Professor, Department of Physics, Institute of Physical Science and Technology Maryland Biophysics Program [email protected] Rm 1111, IPST building (building #085) ResponseWare Login ResponseCard Channels: 02 ResponseWare Web Address: http://www.rwpoll.com/ Session ID: 985787

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Do you have a clicker? 74% 4% 22% 0% 1 2 3 4 1. Clicker 2. iPhone 3. Another mobile device 4. I have nothing Chapter 3 Motion in 3 Dimensions: position x y 1 r r 2 r r 1 2 r r r r r r = Δ k dt dz j dt dy i dt dx r dt d t r t v t r v ˆ ˆ ˆ lim avg + + = = Δ Δ Δ = Δ Δ = r r r r r
Chapter 3 Motion in 3 Dimensions: velocity x y 1 v r 2 v r 2 v r 1 v r 1 2 v v v r r r = Δ v r Δ k dt z d j dt y d i dt x d k dt dv j dt dv i dt dv v dt d t v t a t v a z y x ˆ ˆ ˆ ˆ ˆ ˆ lim 2 2 2 2 2 2 avg + + = + + = = Δ Δ Δ = Δ Δ = r r r r r Can we determine the velocity of an object from an x-y plot?

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PHYS171_f11_lecture_08 - PHYS171 Principles of Physics I...

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