During a physiological assessment, a Formula 1 driver's reaction time is measured using a vertical drop-rod apparatus. The driver sits with their hand positioned at the base of the rod, ready to grip it. Upon an auditory cue, the rod is released from rest under gravity. The driver catches the rod as quickly as possible.
In a baseline trial, the distance the rod fell before being caught was 11.025 cm.
The distance ddd (in metres) that an object falls from rest under gravity in time ttt (in seconds) is given by the formula:
d=12gt2 d = \frac{1}{2} g t^2 d=21gt2where g=9.8 m/s2g = 9.8\text{ m/s}^2g=9.8 m/s2.
Calculate the reaction time t t\,t of the driver. Show your working.
Name the human coordination system responsible for this rapid reflex action, and state one way its signal transmission differs from that of the endocrine system.