Relativity theory assumes that the effect of accelaration on an object equals the effect of this force
... indicates the effect of "mass" if the diatnce between the two objects 
remains... [DOC] [TLE] Gravity and Acceleration - Special and General Relativity - The ... [PAR] The drawback to Einstein's Special Theory of Relativity, however, is that it is ... 
second) would be required to allow objects to break out of Earth's gravity and into 
... the effects of gravity overwhelm the other forces, and it is largely responsible 
for... [DOC] [TLE] Equivalence principle - Wikipedia [PAR] In the theory of general relativity, the equivalence principle is any of several 
related concepts ....