Pararescue jumpers leave the helicopter when it is flying "10 and 10," meaning that the helicopter is 10 ft above the water and moving at a speed of 10 knots (1 knot = 1 nautical mi/h = 1.852 km/h). The international system of units equivalent of "10 and 10" is
A) 3 and 5.
B) 3 and 19.
C) 10 and 19.
D) 30 and 31.
E) 30 and 37.

Question

Quizplus · Accepted Answer

10 feet is approximately 3 meters, and 10 knots is approximately 18.52 km/h, which rounds to 19 km/h.

Pararescue Jumpers Leave the Helicopter When It Is Flying "10