In basic flight planning, flight time in hours is calculated by dividing the distance traveled (in nautical miles) by the ________ (in knots).
Answer
groundspeed
Explanation
The basic relation is `$t=d/GS$`; knots mean nautical miles per hour, so the result is in hours. **Key takeaway:** Use consistent units and groundspeed. **Glossary:** Knot: one NM per hour.