What is the velocity of the hydrogen atom after absorbing the photon?

[dannie]

A stationary hydrogen atom with a mass of 1.67 x10^-27 kg absorbs a photon of light with an energy of 10.2eV.What is the velocity of the hydrogen atom after absorbing the photon?

This is my question:

Is it true that the atom has no speed since all the energy is completely absorbed at the energy level 10.2eV?

 

[tiny-tim]

hi dannie!

hint: momentum