# 100917 - Physics 121 9/17/10 9/17/10 Physics 121 1 9/17/10...

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Physics 121 9/17/10 Prof. E. F. Redish 1 9/17/10 1 Physics 121 9/17/10 2 Physics 121 9/17/10 7 Physics 121 areas t v x ± = ± v = ± x ± t slopes

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Physics 121 9/17/10 Prof. E. F. Redish 2 9/17/10 8 Physics 121 < = ± ± ± a a v t change in velocity time it took to make the change ± ± 9/17/10 9 Physics 121 9/17/10 10 Physics 121 ± ± ± ±± at dv dt vt t tt () = = + ²² ² 22
Physics 121 9/17/10 Prof. E. F. Redish 3 9/17/10 11 Physics 121 t (sec) a (m/s 2 ) dv dt t (sec) v (m/s) a 22 () tt dv at dt vt t ±± = + ²² = ± 12 Physics 121 t (sec) v (m/s) d t dv t (sec) a (m/s) 2 d t a dv a t dt vd v a t d t = == ± ² change in velocity over a small time interval sum (“ ± ”) in the changes in velocity over many small time intervals. 9/17/10 15 Physics 121

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## This note was uploaded on 12/28/2011 for the course PHYSICS 121 taught by Professor Shawhan during the Spring '10 term at Maryland.

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100917 - Physics 121 9/17/10 9/17/10 Physics 121 1 9/17/10...

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