A body is dropped from a height h. If it acquired a momnetum p, then the mass of the body is

Kinetic energy acquired by the body after falling through a height h=loss of gravitational potential energy=mgh

$\text{ or }\frac{{\mathrm{p}}^2}{2\mathrm{m}}=\mathrm{mgh}\left(\text{ or }\right)\mathrm{m}=\frac{\mathrm{p}}{\sqrt{2\mathrm{gh}}}$