VAL ws-graphical interpretation.pages WS # ..: Graphical Interpretation .." .. . ...i.... . . . . . ... . . .. ..... ...;.. .:.. .. . .... . . ..;. . .. . ....... . .. . . . .. . . . ". . .- . .. . . . ... . . . ... : . . . . .. . .... . ... . . . . . . . . .. . . . . . . . . : . . .{ . . . . . . . . . . . ....!. . . . .. . . . . ..... . .... <.... .... . ... .. .:. ........ : p i .3 f. ..... ...... ..:.. ............. t> . . . . . . . . . . . . . . . . . . .. ..:.. ... . . .. : . .. . ! . .. .. .... . . .! . . .. . ? . . . . . . . . . . . . .. . . . . . . . ... .... ..:..... .. . .:......." . . . . ... . ... ... . . . . . .. . . . . . .. ... . . . . . .. . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . .: . ...;.. . . . .. ... . . . . ...'.... ... ..... . . . . . ... .. .. . . .. ..............."......... .... :. ...:... .".. ....... . . ... .... . .. . . .. ....;... Displacer ... . . . . . . . ..:... . .. ...... . . . . . . ... . . ... . .. . . . ... . . .. ..:.. ... . . . .. ; .... . ... ....;.. ..;. . . . . . . ..... .. .. . . .... . . .... ... ...;....;....... ....;.... . . ... .. . ..... . . . .. . . ...:. . . . ... . Time (s) When interpreting displacement versus time graphs, there are three things to remember: the position or LOCATION of the line tells you if displacement is positive or negative ion the slope or INCLINATION of the line tells you if the velocity is positive or negative ion the inflection or TURN of the line tells you if the acceleration is positive or negative. So...for which sections in the graph above is the displacement...? Positive Negative Zero P, A, B . C , D , E . O N, M. G, H, 1 , J,K, L F The SLOPE of a displacement versus time graph will give you VELOCITY! By looking at SLOPE of the line (where it is pointing, NOT the location of the line!), you can determine velocity. (REMEMBER: A flat line has NO slope, therefore v = 0 m/s.) So... for which sections in the graph above is the velocity...? Positive Negative Zero A, H , D , J, NO P , E , M , B , G , K C , F , I , L The INFLECTION, or direction the line is turning, does it look like a cup pointing up (+), or like a cup pointing down (-), in a displacement versus time graph will give you the ACCELERATION! (REMEMBER: Any straight line, since it has NO inflection - it's not turning and therefore has no change in slope - then the a = 0 m/s2.) So... for which sections in the graph above is the acceleration...? Positive U Negative n Zero A , E , H, M D, K, P O, N, L, B. C. F, Gil , J