38kts is, itself, a relative thing, as it’s based on airflow through the pitot, which is not getting steady airflow.
Accirdingly, I don’t think the “airspeed” at which the aircraft was moving could have been only 38kts, as we understand that term (except as it reached its highest altitude and gravity took over at its apex).
Now, if that’s a 4 satellite GPS speed, based on LATERAL MOVEMENT, that’s a different story, as it may have only been moving across the ground at 38kts, while falling out of the sky at terminal velocity!
:-)