Moving man: move by hand and the graph draws itself
Drag the man with the mouse or a finger (or the ← → keys): recording starts by itself and lasts up to 10 s.
x(t)vx(t)ax(t)
The velocity and acceleration graphs from a recording are approximate: velocity is the displacement over an interval divided by the interval's duration (about 0.3 s), and acceleration is the change of velocity over an interval divided by its duration. If the man walks against the Ox axis, the velocity is negative.