  A space with deformed commutation relations for coordinates and momenta
leading to generalized uncertainty principle (GUP) is studied. We show that GUP
causes great violation of the weak equivalence principle for macroscopic
bodies, violation of additivity property of the kinetic energy, dependence of
the kinetic energy on composition, great corrections to the kinetic energy of
macroscopic bodies. We find that all these problems can be solved in the case
of arbitrary deformation function depending on momentum if parameter of
deformation is proportional inversely to squared mass.
