This shows the horizontal acceleration of the pod as a ... would want to have the final position back at zero. Notice in this position graph, the SLOPE is zero at the end, not the position.

But if you calculate the acceleration without the graph, you are explicitly ... if you use other methods to collect position-time data then there could be a non-zero starting velocity.

These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or still. Acceleration is ... axis shows the speed is zero, meaning that the vehicle has stopped ...

For the constant positive velocity graphs and the constant positive acceleration graphs, the initial displacement is zero and the initial velocity is zero. For the constant negative acceleration ...