100929 - Physics 121 9/29/10 9/29/10 1 Physics 121 3.1 3.2...

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Physics 121 9/29/10 Prof. E. F. Redish 1 9/29/10 1 Physics 121 9/29/10 3 Physics 121 3.1 3.2 3.3 3.4 a 2% 1% 1% 0% b 4% 4% 93% 14% c 17% 20% 3% 63% d 2% 69% 3% 0% e 68% 6% 1% 18% ae 1% 0% 0% 0% be 0% 0% 0% 4% ce 7% 0% 0% 0% 9/30/09 9 a x = F x a y = F y ± a = ± F
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Physics 121 9/29/10 Prof. E. F. Redish 2 9/30/09 10 Physics 121 ± v = ± ± r ± t ± ± r = ± r f ² ± r i ± a = ± ± v ± t ± ± v = ± v f ² ± v i v x = ± x ± t v y = ± y ± t a x = ± v x ± t a y = ± v y ± t If a is constant 2 f i v v v + = for either v x or v y . 9/29/10 11 Physics 121 9/29/10 12 Physics 121 ˆ i , ˆ j ± r = x ˆ i + y ˆ j
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Physics 121 9/29/10 Prof. E. F. Redish 3 9/29/10 13 Physics 121 ± r ± r = ± r 1 + ± r 2 ± r 1 ± r 2 ± r x y 9/29/10
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100929 - Physics 121 9/29/10 9/29/10 1 Physics 121 3.1 3.2...

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