The Busboy caused the firing. George and Kramer visit the busboy's ramshackle apartment to apologize, only to accidentally leave the door open, letting his cat out. A few days later, the busboy comes to see George, and tells him that there was a gas line explosion at the restaurant, killing five employees, including the busboy hired to replace him. Moreover, his search for his cat was both successful and led him to stumble upon a better paying job. He thanks George for inadvertently saving his life and getting him a better job. Elaine faces having her boyfriend Ed stay with her for
Work (physics) object. The presence of friction does not affect the work done on the object by its weight. The force of gravity exerted by a mass "M" on another mass "m" is given by where r is the position vector from "M" to "m". Let the mass "m" move at the velocity v then the work of gravity on this mass as it moves from position r("t") to r("t") is given by Notice that the position and velocity of the mass "m" are given by where e and e are the radial and tangential unit vectors directed relative to the vector