![]() (c) Acceleration gradually declines to zero when velocity becomes constant. The slope of this graph is acceleration it is plotted in the final graph. (b) The velocity gradually approaches its top value. (a) The slope of this graph is velocity it is plotted in the next graph. This motion begins where the motion in Figure 3 ends. Graphs of motion of a jet-powered car as it reaches its top velocity. Similarly, velocity increases until 55 s and then becomes constant, since acceleration decreases to zero at 55 s and remains zero afterward. If we call the horizontal axis the\boldsymbol,after which time the slope is constant. Equipment: sparktimer, tickertape, tape, ruler, motion cart, 200 g mass. When two physical quantities are plotted against one another in such a graph, the horizontal axis is usually considered to be an independent variable and the vertical axis a dependent variable. Lab 2:Graphical Analysis of Motion Physics 112 In this lab you will be using graphs to determine the speed of an object moving with uniform motion and instan-taneous speeds and the acceleration of a falling object. Slopes and General Relationshipsįirst note that graphs in this text have perpendicular axes, one horizontal and the other vertical. This section uses graphs of displacement, velocity, and acceleration versus time to illustrate one-dimensional kinematics. Graphs not only contain numerical information they also reveal relationships between physical quantities. time.Ī graph, like a picture, is worth a thousand words.
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