air XXXXXXXXXX factor: &XX;span class="XXXX-XXXXXX" XXXX-XXXX="XXX \XXXX{ (XXX)}" data-XXXXX-in-XXXX="XX"&XX;$XXX \text{ (prh)}$&XX;/span&XX;
drop height (<span class="XXXX-inline" data-math="h" data-XXXXX-in-XXXX="13">$h$</span>): <span XXXXX="math-XXXXXX" data-XXXX="3.X \text{ meters}" data-index-in-XXXX="XX"&XX;$X.7 \text{ meters}$</span>
gravitational XXXXXXXXXXXX (<span XXXXX="XXXX-XXXXXX" data-math="g" XXXX-index-in-node="XX">$g$&XX;/span>): &XX;span class="XXXX-XXXXXX" XXXX-XXXX="9.XX \text{ m/s}^2" XXXX-index-in-node="32"&XX;$X.81 \text{ m/s}^2$&XX;/span&XX;
using the kinematic XXXXXXXX XX XXXXXX under constant acceleration XXXXXXX initial downward XXXXXXXX:
.
XXXXXX check attached file