1/2 mv^2 = mgh, so v = sqrt(2gh). If all potential energy from an altitude of 5000 ft = 1500 m got converted into velocity, we'd talk about 170 m/s or about 33

1/2 mv^2 = mgh, so v = sqrt(2gh). If all potential energy from an altitude of 5000 ft = 1500 m got converted into velocity, we'd talk about 170 m/s or about 330 knots (and a free fall from that altitude would take about 17 seconds, t = sqrt(2h/g)).