Use the standard equation: slope = v= (change in dist ance) (change in time) V = to find the speed of the car during the second time interval from tearlier = 40 min to flater = 80 min using the data in the graph. Round your answer to TWO significant digits (in this case to +/-0.1) and enter it in common decimal notation. (dlater - de earlier (tlater - tearlier) km/min Distance, d (kilometers) 120 100 80 60 40 20 0 Distance versus Time 20 40 Time, t (minutes) 60 80 100 120