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 escape velocity from earth is 11.2 km/sec. anything with less velocity cannot leave earth orbit. The velocity necessary to achieve earth orbit at the distance of the moon is about 10.8 km/sec. From there its just a matter of timing to enable a collision with the moon. Actually the average lunar distance is slightly less [~384,000 km] than the cumulative diameters [~388,000 km] of all the planets [save earth]. Anyways that only amounts to about 10 hours to travel a distance of 384,000 km at an average velocity of 10.8 km/sec.