The Difference Between Velocity & Instantaneous Velocity?

Answer Velocity and instantaneous velocity are terms that are most often used in the physics classroom. Because these two terms don't have the same definition, students who don't know the difference in t... Read More »

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Where does the airspeed get the information from?

How to Calculate Airspeed in Knots?

Pilots typically provide passengers with an airplane's airspeed in miles per hour. However, when they communicate with air-traffic controllers, they give the speed in nautical miles per hour, or kn... Read More »

What is the airspeed of southwest planes from us coast to coast?

What is the velocity of air in still air?

Speed of sound in still air is c ≈ 331 + 0.6 × T. T = Temperature. Speed of sound in air at 20°C is c ≈ 331 + 0.6 × 20 = 343 m/s.