100910-opp - Physics 121 1 Physics 121 3 o o o o o Choose...

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Unformatted text preview: 9/10/10 Physics 121 1 9/10/10 Physics 121 3 o o o o o Choose origin Choose axes Choose scale Set scales on graph Take data from video 9/10/10 Physics 121 4 ˆ r ( t ) = x ( t )i + y ( t ) ˆ j x(t) r = r ( t 2 ) r ( t1 ) t = t2 9/10/10 Physics 121 t1 8 r ( t1 ) r ( t 2 ) r ( t 3 ) r12 = r (t 2 ) r (t1 ) r23 = r (t 3 ) r (t 2 ) r13 = r12 + r23 9/10/10 = r ( t 2 ) r ( t1 ) + r ( t 3 ) r ( t 2 ) r ( 1) = r (t 3 ) Physicst121 9 displacement <v >= time it took to make the displacement r <v >= t 9/10/10 Physics 121 10 Position as a function of time 10 8 6 x (m) r <v >= = v0 t r = v0 t r ( t 2 ) r ( t1 ) = v 0 t r final = rinitial + v0 t 4 2 0 -5 0 5 10 15 t (sec) 9/10/10 Physics 121 11 9/10/10 Physics 121 16 9/10/10 Physics 121 17 dr v (t ) = dt r (t + v (t ) = 9/10/10 t r (t 2) t 2) t Physics 121 18 9/10/10 Physics 121 19 9/10/10 Physics 121 20 Slope = <v> x v= t x x= v t t Velocity as a function of time Position as a function of time 10 2 8 1.5 v (m/s) x (m) x (m) 6 4 1 2 0 -5 0.5 0 0 5 10 15 t (sec) 9/10/10 Physics 121 -5 0 5 t (sec) 10 15 23 9/10/10 Physics 121 24 displacement v= time it took to make the displacement x v= x= v t t x (m) v (m) dx dt t ( sec) 9/10/10 Physics 121 v t ( sec) 26 ...
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100910-opp - Physics 121 1 Physics 121 3 o o o o o Choose...

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