V(a) = lim As lim s(ath) -sla A1-0 At h ->0 h Velocity is the slope of the tangent to the graph of s(t) @ P(a, s(a)). Eg. 1: The function s(t) = 8t(t + 2) describes the distance s, in km that a car travels after a time t, in hours for OSt