The standards for determining employment discrimination under the Rehabilitation Act are the same as those used in title I of the Americans with Disabilities Act. Section 501 Section 501 requires affirmative action and nondiscrimination in employment by Federal agencies of the executive branch.
The speed depends on the aircraft type and also on the weight of the aircraft. The more load it is carrying, the faster it needs to travel to land safely. Typically, an airliner will be travelling at 120mph or faster as it lands. A 747 will usually be moving faster than a smaller passenger plane - in the region of 150mph or more. Concorde, designed for extreme speed needs to be travelling faster still. the design that helps it travel so fast also means that it needs to land at higher speeds than all other airliners. Light aircraft will typically be landing at a speed of below 100mph. It varies - depending on the plane.
The Apollo 11 spacecraft had to travel at least 7 miles per second (11.25 km/s) to break free of Earth's gravitational field. This speed is 32.4 times as fast as the speed of sound ('Mach 32.4). The fastest military plane, the SR-71 Blackbird, travels (only) Mach 3.