The definition of disability under Social Security is different than other programs. Social Security pays only for total disability. No benefits are payable for partial disability or for short-term disability. We consider you disabled under Social Security rules if: You cannot do work that you did before;
UCSB Science Line. A rocket ship, on its way to the moon, can get up to almost 25,000 miles per hour in order to escape the Earths atmosphere. However, it does not go that fast the whole way. Also, the ship cannot fly directly from the Earth straight to the moon surface.
The Moon's speed through the shadow during a lunar eclipse is about one kilometer per second (2,300 mph) and I suppose that would be the speed of its shadow on Earth too. As the earth continues to rotate, the umbra sweeps across the surface from west to east at a speed of about 1600 kilometers an hour.