#$&* course Phy 231 We can also use this same technique from the previous video and apply it to a curved graph of acceleration vs. time. We can make line segments at an infinite amount of points between points a and b to find the area using the trapezoid. The area is (A-BAR(delta T)). This formula is found just like the other formula we used for velocity. If we added all the values from the trapezoids, then it is going to be the total change in velocity.