No matter how far it falls, an ant cannot die when it hits the ground. When things fall for a long enough time, they reach what is called terminal velocity. Terminal velocity is the maximum speed with which something can fall before wind resistance becomes strong enough to not allow it to fall any faster. Since ants are so light, they cannot pick up enough speed for their terminal velocity to actually be terminal. An ant's terminal velocity is roughly 6.4 Km/h, while a human's can reach upwards of 200 Km/h.