9/10/10 1 Physics 1219/10/10 3 Physics 1219/10/10 4 o Choose origin o Choose axes o Choose scale o Set scales on graph o Take data from video Physics 1219/10/10 8 r t()= x(t)ˆ i + y(t)ˆ j x(t) r = r t2() r t1()t = t2 t1Physics 1219/10/10 9 rt rt rtrrtrtrrtrtrrrrt rt rt rtrt rt() () ()() ()() ()() () () ()() ()12312 2 123 3 213 12 23213231 = = =+= + = Physics 1219/10/10 10 Physics 121 <>=<>=vvrtdisplacementtime it took to make the displacement9/10/10 11 Physics 121 <>= == ==+vrtvrvtrt rt v trrvtfinal initial002100() ()Position as a function of time0246810-5 0 5 10 15t (sec)x (m)9/10/10 16 Physics 1219/10/10 17 Physics 1219/10/10 18 Physics 121 vtdrdtvtrt rtttt()()()()==+ 229/10/10 19 Physics 1219/10/10 20 Physics 1219/10/10 23 Physics 121 Velocity as a function of time00.511.52-5 0 5 10 15t (sec)x (m)Position as a function of time0246810-5 0 5 10 15t (sec)x (m)v =xtx = v tx t Slope = <v> v (m/s)9/10/10 24 Physics 1219/10/10 26 Physics 121 t (sec) x (m) t (sec) v (m) dx dt v v=displacementtime it took to make the displacementv =xtx = v
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