Which velocity vs. time graph shows the same motion as the position vs. time graph shown below?

Which velocity vs. time graph shows the same motion as the position vs. time graph shown below?

A toy car moves along a straight-line path such that its motion is represented by the velocity vs. time graph shown. At what time does the car pass through its initial position?

An object travels along a straight line path so that its position is given as a function of time by the graph shown. What is the magnitude of the object's constant acceleration during the interval of time shown in the graph?

An object travels along a straight line path so that its position is given as a function of time by the graph shown. What is the magnitude of the average acceleration of the object during the interval between 4 seconds and 6 seconds?

Engineers are testing a vehicle's stopping ability. On each trial of an experiment, the vehicle is given a different initial speed. When the brakes are applied, the distance that the vehicle travels before it comes to rest is also measured. The data are shown in the graph. What is the best estimate of the magnitude of the vehicle's stopping acceleration?