The Fastest Airplane: Lockheed SR-71
The Lockheed SR-71
The fastest airplane is the Lockheed SR-71. This legendary aircraft, also known as the Blackbird, is a long-range, high-altitude reconnaissance aircraft developed by Lockheed Skunk Works. The SR-71 is famous for its speed and stealth capabilities, making it a crucial asset during the Cold War era.
Calculating Average Velocity
If an SR-71 flies 15.0 km west in 15.3 s, what is its average velocity in kilometers per hour?
What is the average velocity of the SR-71?The average velocity is 3529 km/h west. Explanation: The average velocity is given by: v = d / t where: d is the displacement t is the time taken For the SR-71 in this problem, we have: d = 15.0 km t = 15.3 s * (1/3600 s/h) = 0.00425 h Therefore, substituting into the formula: v = 15.0 / 0.00425 = 3529 km/h The direction is the same as the displacement (west).