Deck 2014: Deck General

1. A 0.1 foot per second (0.06 knot)
2. B 0.2 foot per second (0.12 knot)
3. C 0.5 foot per second (0.30 knot)
4. D 0.75 foot per second (0.44 knot)

Tip: press A-D to answer