A(X2-X1)/t2B(X2/t2)+(X1/t1)CX2/(t2-t1)D(X2-X1)/(t2-t1)Answer: D. (X2-X1)/(t2-t1) Read Explanation: The average velocity of an object is calculated by the formula (x2 - x1) / (t2 - t1)Read more in App