Need Help Please!! (Acceleration Problem) I need help really badly with this problem. I've been trying to figure it out and I feel like a total idiot because I keep getting the same answer and the computer keeps telling me that I'm wrong. The Question Is An object is moving in a straight line with a constant acceleration. Its position is measured at three different times, as shown in the table below. Time (s) Position, (m) 44.00 8.500 45.70 14.573 47.40 25.993 Calculate the magnitude of the acceleration at t=45.70 s. And What I did was find the initial Velocity and the final velocity using those times and positions. and for vi I ended up with 3.837 m/s and for vf i ended up with 6.717 m/s then I took those and the times and put them into the equation Delta V / Delta T to get the acceleration and ended up with 1.694 m/s^2 But it keeps telling me that its wrong..and I'm completely confused..because I'm new to the whole physics thing. So yeah I need help really badly. Thanks in advance.