When the initial velocity is 0 then the displacementfinal velocity. A rough comparison of the slopes of the tangent lines in (a) at 0.25 s, 0.5 s, and 1.0 s with the values for velocity at the corresponding times indicates they are the same values. Actually both the formula's still produce the same answer, since the initial velocity is 0. The slope of the position graph is the velocity. \[v(t) = \frac\): (a) Position: x(t) versus time. The instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of x with respect to t:
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